Sat Feb 27 19:26:22 UTC 202120210227192622

a/kernel-generic-5.10.19-x86_64-1.txz:  Upgraded.
a/kernel-huge-5.10.19-x86_64-1.txz:  Upgraded.
a/kernel-modules-5.10.19-x86_64-1.txz:  Upgraded.
d/kernel-headers-5.10.19-x86-1.txz:  Upgraded.
d/poke-1.0-x86_64-1.txz:  Added.
  This looks useful enough to add upon the initial upstream release.
d/python-setuptools-53.1.0-x86_64-1.txz:  Upgraded.
k/kernel-source-5.10.19-noarch-1.txz:  Upgraded.
l/babl-0.1.86-x86_64-1.txz:  Upgraded.
l/gtk+3-3.24.26-x86_64-1.txz:  Upgraded.
n/network-scripts-15.0-noarch-12.txz:  Rebuilt.
  This has been rewritten to add support for IPv6, VLANs and link aggregation
  (bonding). Thanks very much to tadgy!
x/xorgproto-2021.3-x86_64-1.txz:  Upgraded.
xfce/xfce4-panel-4.16.2-x86_64-1.txz:  Upgraded.
isolinux/initrd.img:  Rebuilt.
kernels/*:  Upgraded.
testing/packages/linux-5.11.x/kernel-generic-5.11.2-x86_64-1.txz:  Upgraded.
testing/packages/linux-5.11.x/kernel-headers-5.11.2-x86-1.txz:  Upgraded.
testing/packages/linux-5.11.x/kernel-huge-5.11.2-x86_64-1.txz:  Upgraded.
testing/packages/linux-5.11.x/kernel-modules-5.11.2-x86_64-1.txz:  Upgraded.
testing/packages/linux-5.11.x/kernel-source-5.11.2-noarch-1.txz:  Upgraded.
usb-and-pxe-installers/usbboot.img:  Rebuilt.

1 files changed, 444 insertions, 150 deletions

diff --git a/source/n/network-scripts/scripts/rc.inet1 b/source/n/network-scripts/scripts/rc.inet1
index 59f89eda7..f63f93ed7 100644
--- a/source/n/network-scripts/scripts/rc.inet1
+++ b/source/n/network-scripts/scripts/rc.inet1
@@ -15,17 +15,20 @@
 # LOGGING #
 ###########
 
-# If possible, log events in /var/log/messages:
-if [ -f /var/run/syslogd.pid ] && [ -x /usr/bin/logger ]; then
-  LOGGER=/usr/bin/logger
-else # output to stdout/stderr:
-  LOGGER=/bin/cat
-fi
+# Message logging.
+info_log() {
+  # If possible, log events in /var/log/messages:
+  if [ -f /var/run/syslogd.pid ] && [ -x /usr/bin/logger ]; then
+    /usr/bin/logger -t "rc.inet1" --id="$$" "$*"
+  else
+    printf "%s: %s\\n" "rc.inet1" "$*"
+  fi
+}
 
-# Handy wrapper for verbose logging:
+# Verbose logging.
 debug_log() {
   if [ "$DEBUG_ETH_UP" = "yes" ]; then
-    echo "/etc/rc.d/rc.inet1:  $*" | $LOGGER
+    info_log "$*"
   fi
 }
 
@@ -46,22 +49,56 @@ do
   IFNAME[$i]=${IFNAME[$i]:=eth${i}}
   i=$(($i+1))
 done
-debug_log "List of interfaces: '${IFNAME[*]}'"
+debug_log "List of interfaces: ${IFNAME[*]}"
+
+####################
+# PRE-LOAD MODULES #
+####################
+
+for i in "${IFNAME[@]}"; do
+  # If the interface isn't in the kernel yet (but there's an alias for it in modules.conf),
+  # then it should be loaded first:
+  if [ ! -e /sys/class/net/${i%%[:.]*} ]; then # no interface yet
+    if /sbin/modprobe -c | grep -v "^#" | grep -w "alias ${i%%[:.]*}" | grep -vw "alias ${i%%[:.]*} off" >/dev/null; then
+      debug_log "/sbin/modprobe ${i%%[:.]*}"
+      /sbin/modprobe ${i%%[:.]*}
+      _DID_MODPROBE=1
+    fi
+  fi
+done
+# Normally the ipv6 module would be automatically loaded when the first IP is assigned to an
+# interface (assuming ipv6 has not been disabled entirely), but autoconf/accept_ra need to be
+# set to 0 before that happens, so try to pre-load ipv6 here.
+if [ ! -e /proc/sys/net/ipv6 ]; then
+  debug_log "/sbin/modprobe ipv6"
+  /sbin/modprobe -q ipv6
+  _DID_MODPROBE=1
+fi
+# If we did any module loading in the blocks above, sleep for a couple of
+# seconds to give time for everything to "take"
+[ -n "${_DID_MODPROBE}" ] && sleep 2
+unset _DID_MODPROBE
 
 ######################
 # LOOPBACK FUNCTIONS #
 ######################
 
-# Function to bring up the loopback interface. If loopback is
+# Function to bring up the loopback interface.  If loopback is
 # already up, do nothing.
 lo_up() {
   if [ -e /sys/class/net/lo ]; then
     if ! /sbin/ip link show dev lo | grep -wq -e "state UP" -e "state UNKNOWN" ; then
-      echo "/etc/rc.d/rc.inet1:  /sbin/ip address add 127.0.0.1/8 dev lo" | $LOGGER
-      /sbin/ip address add 127.0.0.1/8 dev lo
+      info_log "lo: configuring interface"
+      debug_log "/sbin/ip -4 address add 127.0.0.1/8 dev lo"
+      /sbin/ip -4 address add 127.0.0.1/8 dev lo
+      if [ -e /proc/sys/net/ipv6 ]; then
+        debug_log "/sbin/ip -6 address add ::1/128 dev lo"
+        /sbin/ip -6 address add ::1/128 dev lo
+      fi
+      debug_log "/sbin/ip link set dev lo up"
       /sbin/ip link set dev lo up
-      echo "/etc/rc.d/rc.inet1:  /sbin/ip route add 127.0.0.0/8 dev lo" | $LOGGER
-      /sbin/ip route add 127.0.0.0/8 dev lo 
+      debug_log "/sbin/ip route add 127.0.0.0/8 dev lo"
+      /sbin/ip route add 127.0.0.0/8 dev lo
     fi
   fi
 }
@@ -69,7 +106,10 @@ lo_up() {
 # Function to take down the loopback interface:
 lo_down() {
   if [ -e /sys/class/net/lo ]; then
-    echo "/etc/rc.d/rc.inet1:  /sbin/ip link set dev lo down" | $LOGGER
+    info_log "lo: de-configuring interface"
+    debug_log "/sbin/ip address flush dev lo"
+    /sbin/ip address flush dev lo
+    debug_log "/sbin/ip link set dev lo down"
     /sbin/ip link set dev lo down
   fi
 }
@@ -78,20 +118,24 @@ lo_down() {
 # INTERFACE FUNCTIONS #
 #######################
 
-# Function to create virtual interfaces.
+# Function to create virtual interfaces
 virtif_create() {
   # argument is 'i' - the position of this interface in the VIRTIFNAME array.
   # this loop goes from i=0 to i=number_of_configured_virtual_interfaces_minus_one
   # which means it doesn't do anything if there are none.
   for i in $(seq 0 $((${#VIRTIFNAME[@]} - 1))); do
+    info_log "${VIRTIFNAME[$i]}: creating virtual interface"
+    debug_log "/sbin/ip tuntap add dev ${VIRTIFNAME[$i]} mode ${VIRTIFTYPE[$i]} user ${VIRTIFUSER[$i]} group ${VIRTIFGROUP[$i]}"
     /sbin/ip tuntap add dev ${VIRTIFNAME[$i]} mode ${VIRTIFTYPE[$i]} user ${VIRTIFUSER[$i]} group ${VIRTIFGROUP[$i]}
   done
 }
 
-# Function to destroy virtual interfaces.
+# Function to destory virtual interfaces
 virtif_destroy() {
   # argument is 'i' - the position of this interface in the VIRTIFNAME array.
   for i in $(seq 0 $((${#VIRTIFNAME[@]} - 1))); do
+    info_log "${VIRTIFNAME[$i]}: destroying virtual interface"
+    debug_log "/sbin/ip tuntap del dev ${VIRTIFNAME[$i]} mode ${VIRTIFTYPE[$i]}"
     /sbin/ip tuntap del dev ${VIRTIFNAME[$i]} mode ${VIRTIFTYPE[$i]}
   done
 }
@@ -99,30 +143,91 @@ virtif_destroy() {
 # Function to assemble a bridge interface.
 br_open() {
   # argument is 'i' - the position of this interface in the IFNAME array.
+  info_log "${IFNAME[$1]}: creating bridge"
+  debug_log "/sbin/ip link add name ${IFNAME[$1]} type bridge"
   /sbin/ip link add name ${IFNAME[$1]} type bridge
   for BRIF in ${BRNICS[$1]}; do
-    /sbin/ip link set dev $BRIF down
-    /sbin/ip address add 0.0.0.0 dev $BRIF
+    debug_log "/sbin/ip address flush dev $BRIF"
+    /sbin/ip address flush dev $BRIF
+    debug_log "/sbin/ip link set dev $BRIF master ${IFNAME[$1]}"
     /sbin/ip link set dev $BRIF master ${IFNAME[$1]}
+    debug_log "/sbin/ip link set dev $BRIF up"
     /sbin/ip link set dev $BRIF up
   done
+  while read -r -d \| IFOPT; do
+    if [ -n "$IFOPT" ]; then
+      debug_log "/sbin/ip link set dev ${IFNAME[$1]} type bridge $IFOPT"
+      /sbin/ip link set dev ${IFNAME[$1]} type bridge $IFOPT
+    fi
+  done <<<"${IFOPTS[$i]}|"	# The | on the end is required.
+  debug_log "/sbin/ip link set dev ${IFNAME[$1]} up"
   /sbin/ip link set dev ${IFNAME[$1]} up
 }
 
 # Function to disassemble a bridge interface.
 br_close() {
-  /sbin/ip link set dev ${IFNAME[$1]} down
   # argument is 'i' - the position of this interface in the IFNAME array.
-  #for BRIF in ${BRNICS[$1]}; do
+  info_log "${IFNAME[$1]}: destroying bridge"
+  debug_log "/sbin/ip link set dev ${IFNAME[$1]} down"
+  /sbin/ip link set dev ${IFNAME[$1]} down
   for BRIF in $(ls --indicator-style=none /sys/class/net/${IFNAME[$1]}/brif/)
   do
+    debug_log "/sbin/ip link set dev $BRIF nomaster"
     /sbin/ip link set dev $BRIF nomaster
   done
-  /sbin/ip link set dev ${IFNAME[$1]} down
+  for BRIF in ${BRNICS[$1]}; do
+    debug_log "/sbin/ip link set dev $BRIF down"
+    /sbin/ip link set dev $BRIF down
+  done
+  debug_log "/sbin/ip link del ${IFNAME[$1]}"
   /sbin/ip link del ${IFNAME[$1]}
 }
 
-# Function to bring up a network interface. If the interface is
+# Function to create a bond.
+bond_create() {
+  # Argument is 'i' - the position of this interface in the IFNAME array.
+  info_log "${IFNAME[$1]}: creating bond"
+  debug_log "/sbin/ip link add name ${IFNAME[$1]} type bond"
+  /sbin/ip link add name ${IFNAME[$1]} type bond
+  debug_log "/sbin/ip link set dev ${IFNAME[$1]} type bond mode ${BONDMODE[$1]:-balance-rr}"
+  /sbin/ip link set dev ${IFNAME[$1]} type bond mode ${BONDMODE[$1]:-balance-rr}
+  for BONDIF in ${BONDNICS[$1]}; do
+    debug_log "/sbin/ip address flush dev $BONDIF"
+    /sbin/ip address flush dev $BONDIF
+    debug_log "/sbin/ip link set $BONDIF master ${IFNAME[$1]}"
+    /sbin/ip link set $BONDIF master ${IFNAME[$1]}
+    debug_log "/sbin/ip link set dev $BONDIF up"
+    /sbin/ip link set dev $BONDIF up
+  done
+  # This has to be done *after* the interface is brought up because the
+  # 'primary <interface>' option has to occur after the interface is active.
+  while read -r -d \| IFOPT; do
+    if [ -n "$IFOPT" ]; then
+      debug_log "/sbin/ip link set dev ${IFNAME[$1]} type bond $IFOPT"
+      /sbin/ip link set dev ${IFNAME[$1]} type bond $IFOPT
+    fi
+  done <<<"${IFOPTS[$1]}|"	# The | on the end is required.
+}
+
+# Function to destroy a bond.
+bond_destroy() {
+  # Argument is 'i' - the position of this interface in the IFNAME array.
+  info_log "${IFNAME[$1]}: destroying bond"
+  debug_log "/sbin/ip link set dev ${IFNAME[$1]} down"
+  /sbin/ip link set dev ${IFNAME[$1]} down
+  debug_log "/sbin/ip address flush dev ${IFNAME[$1]}"
+  /sbin/ip address flush dev ${IFNAME[$1]}
+  for BONDIF in ${BONDNICS[$1]}; do
+    debug_log "/sbin/ip link set $BONDIF nomaster"
+    /sbin/ip link set $BONDIF nomaster
+    debug_log "/sbin/ip link set dev $BONDIF down"
+    /sbin/ip link set dev $BONDIF down
+  done
+  debug_log "/sbin/ip link del name ${IFNAME[$1]} type bond"
+  /sbin/ip link del name ${IFNAME[$1]} type bond
+}
+
+# Function to bring up a network interface.  If the interface is
 # already up or does not yet exist (perhaps because the kernel driver
 # is not loaded yet), do nothing.
 if_up() {
@@ -133,126 +238,265 @@ if_up() {
     i=$(($i+1))
   done
   # If "i" is greater or equal to "MAXNICS" at this point, it means we didn't
-  # find an entry in IFNAME array corresponding to "$1", which likely means
+  # find an entry in IFNAME array corresponding to "${1}", which likely means
   # there are more interfaces configured than MAXNICS. Let's err on the
   # side of caution and do nothing instead of possibly doing the wrong thing.
   if [ $i -ge $MAXNICS ]; then
-    echo "/etc/rc.d/rc.inet1:  skipping ${1}, you might need to increase MAXNICS" | $LOGGER
+    info_log "${1}: skipping - you might need to increase MAXNICS"
     return
   fi
-  # If the interface is a bridge, then create it first:
+  info_log "${1}: configuring interface"
+  # If you need to set hardware addresses for the underlying interfaces in a
+  # bond or bridge, configure the interfaces with IPs of 0.0.0.0 and set the
+  # MAC address with HWADDR.  Then, finally, define the bond or bridge.
+  # If the interface is a bond, create it.
+  [ -n "${BONDNICS[$i]}" ] && bond_create $i
+  # If the interface is a bridge, create it.
   [ -n "${BRNICS[$i]}" ] && br_open $i
-  # If the interface isn't in the kernel yet (but there's an alias for it in
-  # modules.conf), then it should be loaded first:
-  if [ -z "${IPADDR[$i]}" ] && [ "${USE_DHCP[$i]}" != "yes" ]; then # skip unconfigured interfaces
-    debug_log "skipping ${1} early, interface is not configured in /etc/rc.d/rc.inet1.conf"
-    return 0
-  fi
-  if [ ! -e /sys/class/net/${1%%:*} ]; then # no interface yet
-    if /sbin/modprobe -c | grep -v "^#" | grep -w "alias ${1}" | grep -vw "alias ${1} off" > /dev/null ; then
-      echo "/etc/rc.d/rc.inet1:  /sbin/modprobe ${1}" | $LOGGER
-      /sbin/modprobe ${1}
-    fi
-  fi
-  if [ -e /sys/class/net/${1%%:*} ]; then # interface exists
-    if ! /sbin/ip address show dev ${1} 2>/dev/null | grep -wq inet || \
-      ! /sbin/ip link show dev ${1} | grep -wq "state UP" ; then # interface not up or not configured
-      if [ -n "${HWADDR[$i]}" ]; then # Set hardware address _before_ the interface goes up:
-        echo "/etc/rc.d/rc.inet1:  /sbin/ip link set dev ${1} address ${HWADDR[$i]}" | $LOGGER
-        /sbin/ip link set dev ${1} address ${HWADDR[$i]}
+  if [ -e /sys/class/net/${1%%[:.]*} ]; then # interface exists
+    if ! /sbin/ip address show scope global dev ${1} 2>/dev/null | grep -Ewq '(inet|inet6)' || \
+        ! /sbin/ip link show dev ${1} | grep -wq "state UP"; then # interface not up or not configured
+      local IF_UP=0
+      # Initialize any wireless parameters:
+      if [ -x /etc/rc.d/rc.wireless ]; then
+        . /etc/rc.d/rc.wireless ${1} start
       fi
-      if [ -n "${MTU[$i]}" ]; then # Set MTU to something else than 1500
-        echo "/etc/rc.d/rc.inet1:  /sbin/ip link set dev ${1} mtu ${MTU[$i]}" | $LOGGER
-        /sbin/ip link set dev ${1} mtu ${MTU[$i]}
+      # Handle VLAN interfaces before trying to configure IP addresses.
+      if echo "${1}" | grep -Fq .; then
+        IFACE="${1%.*}"
+        VLAN="${1##*.}"
+        # Check if the underlying interface is already up.
+        if ! /sbin/ip link show dev $IFACE 2>/dev/null| grep -wq "state UP"; then
+          # Bring up the underlying interface.
+          debug_log "/sbin/ip link set dev $IFACE up"
+          if ! /sbin/ip link set dev $IFACE up; then
+            info_log "${1}: failed to bring up interface $IFACE"
+            return
+          fi
+          IF_UP=1
+        fi
+        # Configure the VLAN interface.
+        info_log "${1}: creating VLAN interface"
+        debug_log "/sbin/ip link add link $IFACE name ${1} type vlan id $VLAN"
+        if ! /sbin/ip link add link $IFACE name ${1} type vlan id $VLAN; then
+          info_log "${1}: failed to create VLAN interface"
+          ((IF_UP == 1)) && /sbin/ip link set dev $IFACE down
+          return
+        fi
+        while read -r -d \| IFOPT; do
+          if [ -n "$IFOPT" ]; then
+            debug_log "/sbin/ip link set dev ${1} type vlan $IFOPT"
+            /sbin/ip link set dev ${1} type vlan $IFOPT
+          fi
+        done <<<"${IFOPTS[$i]}|"	# The | on the end is required.
+      elif [ -z "${BONDNICS[$i]}" ] && [ -z "${BRNICS[$i]}" ]; then
+        # Only apply IFOPTS for a physical interface if it's not been handled
+        # by a higher level interface.
+        while read -r -d \| IFOPT; do
+          if [ -n "$IFOPT" ]; then
+            debug_log "/sbin/ip link set dev ${1} $IFOPT"
+            /sbin/ip link set dev ${1} $IFOPT
+          fi
+        done <<<"${IFOPTS[$i]}|"	# The | on the end is required.
       fi
-      if /sbin/ip link show dev ${1} | grep -wq "state DOWN" ; then
-        /sbin/ip link set dev ${1} up  # Bring up interface
+      # Set hardware address:
+      if [ -n "${HWADDR[$i]}" ]; then
+        debug_log "/sbin/ip link set dev ${1} address ${HWADDR[$i]}"
+        if ! /sbin/ip link set dev ${1} address ${HWADDR[$i]} 2>/dev/null; then
+          info_log "${1}: failed to set hardware address"
+        fi
       fi
-      if [ -x /etc/rc.d/rc.wireless ]; then
-        . /etc/rc.d/rc.wireless ${1} start # Initialize any wireless parameters
+      if [ -e /proc/sys/net/ipv6 ]; then # ipv6 networking is available
+        # Disable v6 IP auto configuration before trying to bring up the interface:
+        debug_log "${1}: disabling IPv6 autoconf"
+        echo "0" >/proc/sys/net/ipv6/conf/${1}/autoconf
+        if [ "${USE_RA[$i]}" = "yes" ]; then
+          # Unconditionally accept router advertisements on this interface:
+          debug_log "${1}: accepting IPv6 RA"
+          echo "1" >/proc/sys/net/ipv6/conf/${1}/accept_ra
+        else
+          # Disable router advertisments on this interface until SLAAC is enabled:
+          debug_log "${1}: ignoring IPv6 RA"
+          echo "0" >/proc/sys/net/ipv6/conf/${1}/accept_ra
+        fi
       fi
-      if [ "${USE_DHCP[$i]}" = "yes" ]; then # use DHCP to bring interface up
-        # Clear DHCP_OPTIONS before adding new options to it:
-        unset DHCP_OPTIONS
+      debug_log "/sbin/ip address flush dev ${1}"
+      /sbin/ip address flush dev ${1}
+      IF_UP=0
+      # Slackware historically favours dynamic configuration over fixed IP to configure interfaces, so keep that tradition:
+      if [ "${USE_DHCP[$i]}" = "yes" ] || { [ -e /proc/sys/net/ipv6 ] && [ "${USE_DHCP6[$i]}" = "yes" ]; }; then # use dhcpcd
+        info_log "${1}: starting dhcpcd"
+        # Declare DHCP_OPTIONS array before adding new options to it:
+        local -a DHCP_OPTIONS=()
         # Set DHCP_OPTIONS for this interface:
-        [ -n "${DHCP_HOSTNAME[$i]}" ] && DHCP_OPTIONS="-h ${DHCP_HOSTNAME[$i]}"
-        [ "${DHCP_KEEPRESOLV[$i]}" = "yes" ] && DHCP_OPTIONS="$DHCP_OPTIONS -C resolv.conf"
-        [ "${DHCP_KEEPNTP[$i]}" = "yes" ] && DHCP_OPTIONS="$DHCP_OPTIONS -C ntp.conf"
-        [ "${DHCP_KEEPGW[$i]}" = "yes" ] && DHCP_OPTIONS="$DHCP_OPTIONS -G"
-        [ "${DHCP_DEBUG[$i]}" = "yes" ] && DHCP_OPTIONS="$DHCP_OPTIONS -d"
-        [ "${DHCP_NOIPV4LL[$i]}" = "yes" ] && DHCP_OPTIONS="$DHCP_OPTIONS -L"
-        [ -n "${DHCP_IPADDR[$i]}" ] && DHCP_OPTIONS="$DHCP_OPTIONS -r ${DHCP_IPADDR[$i]}"
-        echo "Polling for DHCP server on interface ${1}:"
-        # If you set a timeout, you get one, even if the kernel doesn't think that
-        # your device is connected, in case /sys isn't right (which it usually isn't
-        # except right after the device is loaded, when it usually is):
-        #### (start commented out)
-        # This is deactivated for now since the kernel has been returning incorrect
-        # results concerning whether the interface carrier is detected.
-        #if [ -z "${DHCP_TIMEOUT[$i]}" ]; then
-        #  /sbin/ip link set dev ${1} up && sleep 1
-        #  CONNSTATUS="$(cat /sys/class/net/${1}/carrier 2> /dev/null)"
-        #  /sbin/ip link set dev ${1} down
-        #  if [ "$CONNSTATUS" = "0" ]; then
-        #    # The kernel has just told us the cable isn't even plugged in, but we will
-        #    # give any DHCP server a short chance to reply anyway:
-        #    echo "No carrier detected on ${1}.  Reducing DHCP timeout to 15 seconds."
-        #    DHCP_TIMEOUT[$i]=15
-        #  fi
-        #fi
-        #### (end commented out)
-        # 15 seconds should be a reasonable default DHCP timeout. 30 was too much.
-        echo "/etc/rc.d/rc.inet1:  /sbin/dhcpcd -L -t ${DHCP_TIMEOUT[$i]:-15} ${DHCP_OPTIONS} ${1}" | $LOGGER
-        /sbin/dhcpcd -L -t ${DHCP_TIMEOUT[$i]:-15} ${DHCP_OPTIONS} ${1}
-        if [ "$?" == "0" ]; then # the dhcp call has succeeded
-          if [ -n "${IPALIASES[$i]}" ]; then
-            # Add extra IP addresses, if defined, to interface
-            num=0
-            for ipalias in ${IPALIASES[$i]}; do
-              ip="${ipalias%/*}"
-              nm="${ipalias#*/}"
-              [ -z "$nm" ] || [ "$ip" == "$nm" ] && nm="32"
-              /sbin/ip address add ${ip}/${nm} dev ${1} label ${1}:${num}
-              num=$(($num + 1))
-            done
+        if [ -e /proc/sys/net/ipv6 ]; then
+          if [ "${USE_DHCP[$i]}" = "yes" ] && [ "${USE_DHCP6[$i]}" != "yes" ]; then # only try v4 dhcp
+            DHCP_OPTIONS+=("-4")
+          elif [ "${USE_DHCP[$i]}" != "yes" ] && [ "${USE_DHCP6[$i]}" = "yes" ]; then # only try v6 dhcp
+            DHCP_OPTIONS+=("-6")
           fi
-          if [ "${PROMISCUOUS[$i]}" = "yes" ]; then
-            # Set promiscuous mode on the interface
-            /sbin/ip link set dev ${1} promisc on
+        else
+          DHCP_OPTIONS+=("-4")
+        fi
+        [ -n "${DHCP_HOSTNAME[$i]}" ] && DHCP_OPTIONS+=("-h" "${DHCP_HOSTNAME[$i]}")
+        [ "${DHCP_KEEPRESOLV[$i]}" = "yes" ] && DHCP_OPTIONS+=("-C" "resolv.conf")
+        [ "${DHCP_KEEPNTP[$i]}" = "yes" ] && DHCP_OPTIONS+=("-C" "ntp.conf")
+        [ "${DHCP_KEEPGW[$i]}" = "yes" ] && DHCP_OPTIONS+=("-G")
+        [ "${DHCP_DEBUG[$i]}" = "yes" ] && DHCP_OPTIONS+=("-d")
+        # The -L option used to be hard coded into the dhcpcd command line in -current.  It was added to assist ARM users
+        # get networking up and running.  Previous versions of Slackware did not have -L hard coded - the code here keeps
+        # the 14.2 behaviour, but can be altered to make the use of -L default as in -current.  To change the behaviour,
+        # alter the test below to be: [ "${DHCP_NOIPV4LL[$i]}" != "no" ].
+        # Note: ARM users should make use of the DHCP_NOIPV4LL[x]="yes" parameter in rc.inet1.conf - this is the correct
+        # way to get the behaviour they seek.
+        [ "${DHCP_NOIPV4LL[$i]}" = "yes" ] && DHCP_OPTIONS+=("-L")
+        [ -n "${DHCP_IPADDR[$i]}" ] && DHCP_OPTIONS+=("-r" "${DHCP_IPADDR[$i]}")
+        echo "${1}: polling for DHCP server"
+        # 15 seconds should be a reasonable default DHCP timeout.  30 was too much.
+        debug_log "/sbin/dhcpcd -t ${DHCP_TIMEOUT[$i]:-15} ${DHCP_OPTIONS[*]} ${1}"
+        if /sbin/dhcpcd -t "${DHCP_TIMEOUT[$i]:-15}" "${DHCP_OPTIONS[@]}" ${1}; then
+          # Enable accepting of RA packets if explicitly told to:
+          if [ -e /proc/sys/net/ipv6 ] && [ "${USE_RA[$i]}" = "yes" ]; then
+            debug_log "${1}: unconditionally accepting IPv6 RA"
+            echo "1" >/proc/sys/net/ipv6/conf/${1}/accept_ra
           fi
+          IF_UP=1
+        else
+          info_log "${1}: failed to obtain DHCP lease"
+          debug_log "/sbin/ip address flush dev ${1}"
+          /sbin/ip address flush dev ${1}
+          debug_log "/sbin/ip link set dev ${1} down"
+          /sbin/ip link set dev ${1} down
+        fi
+      fi
+      if [ -e /proc/sys/net/ipv6 ] && [ "${USE_DHCP6[$i]}" != "yes" ] && [ "${USE_SLAAC[$i]}" = "yes" ]; then # configure via SLAAC
+        info_log "${1}: enabling SLAAC"
+        # Enable accepting of RA packets, unless explicitly configured not to:
+        if [ "${USE_RA[$i]}" = "no" ]; then
+          debug_log "${1}: ignoring IPv6 RA"
+          echo "0" >/proc/sys/net/ipv6/conf/${1}/accept_ra
+        else
+          debug_log "${1}: accepting IPv6 RA"
+          echo "1" >/proc/sys/net/ipv6/conf/${1}/accept_ra
+        fi
+        # Enable auto configuration of interfaces:
+        echo "1" >/proc/sys/net/ipv6/conf/${1}/autoconf
+        # Bring the interface up:
+        debug_log "/sbin/ip link set dev ${1} up"
+        /sbin/ip link set dev ${1} up
+        echo "${1}: waiting for router announcement"
+        for ((j = ${SLAAC_TIMEOUT[$i]:=15} * 2; j--;)); do # by default, wait a max of 15 seconds for the interface to configure
+          /sbin/ip -6 address show dynamic dev ${1} 2>/dev/null | grep -Ewq 'inet6' && { IF_UP=1; break; }
+          sleep 0.5
+        done
+        if (($IF_UP != 1)); then
+          echo "${1}: timed out"
+          info_log "${1}: failed to auto configure after ${SLAAC_TIMEOUT[$i]} seconds"
+          debug_log "/sbin/ip address flush dev ${1}"
+          /sbin/ip address flush dev ${1}
+          debug_log "/sbin/ip link set dev ${1} down"
+          /sbin/ip link set dev ${1} down
         fi
-      else # bring up interface using a static IP address
-        if [ -n "${IPADDR[$i]}" ]; then # skip unconfigured interfaces
-          # Set up the network card:
-          echo "/etc/rc.d/rc.inet1:  /sbin/ip address add ${IPADDR[$i]}/${NETMASK[$i]} broadcast + dev ${1}" | $LOGGER
-          /sbin/ip address add ${IPADDR[$i]}/${NETMASK[$i]} broadcast + dev ${1}
-          if /sbin/ip link show dev ${1} | grep -wq "state DOWN" ; then
-            /sbin/ip link set dev ${1} up  # Bring up interface
+      fi
+      if [ "${USE_DHCP[$i]}" != "yes" ] && [ -n "${IPADDR[$i]}" ]; then # add a fixed v4 IP to the interface
+        info_log "${1}: setting fixed IPv4 address"
+        if [ -z "${NETMASK[$i]}" ]; then
+          info_log "${1}: no NETMASK set for primary IP ${IPADDR[$i]} - assuming 24 (aka, 255.255.255.0)"
+          NETMASK[$i]="24"
+        fi
+        debug_log "/sbin/ip -4 address add ${IPADDR[$i]}/${NETMASK[$i]#/} broadcast + dev ${1}"
+        if /sbin/ip -4 address add ${IPADDR[$i]}/${NETMASK[$i]#/} broadcast + dev ${1} && \
+            /sbin/ip link set dev ${1} up; then
+          IF_UP=1
+        else
+          info_log "${1}: failed to set IP ${IPADDR[$i]}"
+          debug_log "/sbin/ip address flush dev ${1}"
+          /sbin/ip address flush dev ${1}
+          debug_log "/sbin/ip link set dev ${1} down"
+          /sbin/ip link set dev ${1} down
+        fi
+      fi
+      if [ -e /proc/sys/net/ipv6 ] && [ "${USE_DHCP6[$i]}" != "yes" ] && [ "${USE_SLAAC[$i]}" != "yes" ] && \
+          [ -n "${IP6ADDRS[$i]}" ]; then # add fixed v6 IPs
+        info_log "${1}: setting fixed IPv6 addresses"
+        # IPv6's Duplicate Address Detection (DAD) causes a race condition when bringing up interfaces, as
+        # described here:  https://www.agwa.name/blog/post/beware_the_ipv6_dad_race_condition
+        # Disable DAD while bringing up the interface - but note that this means the loss of detection of a
+        # duplicate address.  It's a trade off, unfortunately.
+        debug_log "${1}: disabling IPv6 DAD"
+        echo "0" >/proc/sys/net/ipv6/conf/${1}/accept_dad
+        for V6IP in ${IP6ADDRS[$i]}; do
+          IP="${V6IP%/*}"
+          PREFIX="${V6IP#*/}"
+          if [ -z "$PREFIX" ] || [ "$IP" == "$PREFIX" ]; then
+            info_log "${1}: no prefix length set for IP $IP - assuming 64"
+            PREFIX="64"
           fi
-          # Add extra IP addresses, if defined, to interface
-          if [ -n "${IPALIASES[$i]}" ]; then
-            num=0
-            for ipalias in ${IPALIASES[$i]}; do
-              ip="${ipalias%/*}"
-              nm="${ipalias#*/}"
-              [ -z "$nm" ] || [ "$ip" == "$nm" ] && nm="32"
-              /sbin/ip address add ${ip}/${nm} dev ${1} label ${1}:${num}
-              num=$(($num + 1))
-            done
+          debug_log "/sbin/ip -6 address add $IP/$PREFIX dev ${1}"
+          if /sbin/ip -6 address add $IP/$PREFIX dev ${1} && \
+              /sbin/ip link set dev ${1} up; then
+            # Enable accepting of RA packets if explicitly told to.
+            if [ "${USE_RA[$i]}" = "yes" ]; then
+              debug_log "${1}: unconditionally accepting IPv6 RA"
+              echo "1" >/proc/sys/net/ipv6/conf/${1}/accept_ra
+            fi
+            IF_UP=1
+          else
+            info_log "${1}: failed to set IP $IP"
+            if (($IF_UP != 1)); then # a v4 address was configured, don't flush it
+              debug_log "/sbin/ip address flush dev ${1}"
+              /sbin/ip address flush dev ${1}
+              debug_log "/sbin/ip link set dev ${1} down"
+              /sbin/ip link set dev ${1} down
+            fi
           fi
-          if [ "${PROMISCUOUS[$i]}" = "yes" ]; then
-            # Set promiscuous mode on the interface
-            /sbin/ip link set dev ${1} promisc on
+        done
+        # Reset accept_dad back to default now all the IPs are configured:
+        debug_log "${1}: resetting IPv6 DAD to default"
+        cat /proc/sys/net/ipv6/conf/default/accept_dad >/proc/sys/net/ipv6/conf/${1}/accept_dad
+      fi
+      if (($IF_UP == 1)); then # only do further config if the interface came up
+        info_log "${1}: setting fixed IPv4 alias addresses"
+        # Add extra IPv4 addresses to the interface:
+        if [ -n "${IPALIASES[$i]}" ]; then
+          NUM=0
+          for IPALIAS in ${IPALIASES[$i]}; do
+            IP="${IPALIAS%/*}"
+            NM="${IPALIAS#*/}"
+            if [ -z "$NM" ] || [ "$IP" == "$NM" ]; then
+              info_log "${1}: no netmask set for alias IP $IP - assuming 24 (aka, 255.255.255.0)"
+              NM="24"
+            fi
+            debug_log "/sbin/ip -4 address add $IP/$NM broadcast + dev ${1} label ${1}:$NUM"
+            if /sbin/ip -4 address add $IP/$NM broadcast + dev ${1} label ${1}:$NUM; then
+              NUM=$(($NUM + 1))
+            else
+              info_log "${1}: failed to add alias IP $IP"
+            fi
+          done
+        fi
+        # Force an MTU (possibly over-riding that set by DHCP or RA):
+        if [ -n "${MTU[$i]}" ]; then
+          info_log "${1}: setting custom MTU"
+          debug_log "/sbin/ip link set dev ${1} mtu ${MTU[$i]}"
+          if ! /sbin/ip link set dev ${1} mtu ${MTU[$i]}; then
+            info_log "${1}: failed to set MTU"
+          fi
+        fi
+        # Set promiscuous mode on the interface:
+        if [ "${PROMISCUOUS[$i]}" = "yes" ]; then
+          info_log "${1}: setting promiscuous mode"
+          debug_log "/sbin/ip link set dev ${1} promisc on"
+          if ! /sbin/ip link set dev ${1} promisc on; then
+            info_log "${1}: failed to set promiscuous mode"
           fi
-        else
-          debug_log "${1} interface is not configured in /etc/rc.d/rc.inet1.conf"
         fi
       fi
     else
-      debug_log "${1} is already up, skipping"
-    fi 
+      debug_log "${1}: skipping configuration - already up"
+    fi
   else
-    debug_log "${1} interface does not exist (yet)"
+    debug_log "${1}: skipping configuration - does not exist (yet)"
   fi
 }
 
@@ -265,27 +509,61 @@ if_down() {
     i=$(($i+1))
   done
   if [ $i -ge $MAXNICS ]; then
-    echo "/etc/rc.d/rc.inet1:  skipping ${1}, you might need to increase MAXNICS" | $LOGGER
+    info_log "${1}: skipping - you might need to increase MAXNICS"
     return
   fi
-  if [ -e /sys/class/net/${1%%:*} ]; then
-    if [ "${USE_DHCP[$i]}" = "yes" ]; then
-      echo "/etc/rc.d/rc.inet1:  /sbin/dhcpcd -k -d ${1}" | $LOGGER
-      /sbin/dhcpcd -k -d ${1} 2> /dev/null || /sbin/ip link set dev ${1} down
-      sleep 1
-    else
-      echo "/etc/rc.d/rc.inet1:  /sbin/ip link set dev ${1} down" | $LOGGER
-      /sbin/ip link set dev ${1} down
+  info_log "${1}: de-configuring interface"
+  if [ -e /sys/class/net/${1} ]; then
+    if [ "${USE_DHCP[$i]}" = "yes" ] || [ "${USE_DHCP6[$i]}" = "yes" ]; then # take down dhcpcd
+      info_log "${1}: stopping dhcpcd"
+      # When using -k, dhcpcd requires some command line options to match those used to invoke it:
+      if [ "${USE_DHCP[$i]}" = "yes" ] && [ "${USE_DHCP6[$i]}" != "yes" ]; then # only v4 dhcp
+        DHCP_OPTIONS="-4"
+      elif [ "${USE_DHCP[$i]}" != "yes" ] && [ "${USE_DHCP6[$i]}" = "yes" ]; then # only v6 dhcp
+        DHCP_OPTIONS="-6"
+      fi
+      debug_log "/sbin/dhcpcd $DHCP_OPTIONS -k -d ${1}"
+      /sbin/dhcpcd $DHCP_OPTIONS -k -d ${1} 2>/dev/null || info_log "${1}: failed to stop dhcpcd"
     fi
-    if [ -x /etc/rc.d/rc.wireless ]; then
-      . /etc/rc.d/rc.wireless ${1} stop # Kill wireless daemons if any.
+    # Disable v6 IP auto configuration and RA before trying to clear the IP from the interface:
+    if [ -e /proc/sys/net/ipv6 ]; then
+      debug_log "${1}: disabling IPv6 autoconf and RA"
+      echo "0" >/proc/sys/net/ipv6/conf/${1}/autoconf
+      echo "0" >/proc/sys/net/ipv6/conf/${1}/accept_ra
+    fi
+    sleep 0.5 # allow time for DHCP/RA to unconfigure the interface
+    # Flush any remaining IPs:
+    debug_log "/sbin/ip address flush dev ${1}"
+    /sbin/ip address flush dev ${1}
+    # Bring the interface down:
+    debug_log "/sbin/ip link set dev ${1} down"
+    /sbin/ip link set dev ${1} down
+    # Reset autoconf and accept_ra back to defaults:
+    if [ -e /proc/sys/net/ipv6 ]; then
+      debug_log "${1}: resetting IPv6 autoconf and RA to defaults"
+      cat /proc/sys/net/ipv6/conf/default/autoconf >/proc/sys/net/ipv6/conf/${1}/autoconf
+      cat /proc/sys/net/ipv6/conf/default/accept_ra >/proc/sys/net/ipv6/conf/${1}/accept_ra
     fi
     # If the interface is a bridge, then destroy it now:
-    if [ -n "${BRNICS[$i]}" ]; then
-      br_close $i
+    [ -n "${BRNICS[$i]}" ] && br_close $i
+    # If the interface is a bond, then destroy it now.
+    [ -n "${BONDNICS[$i]}" ] && bond_destroy $i
+    # Take down VLAN interface, if configured.
+    if echo "${1}" | grep -Fq .; then
+      info_log "${1}: destroying VLAN interface"
+      debug_log "/sbin/ip link set dev ${1} down"
+      /sbin/ip link set dev ${1} down
+      debug_log "/sbin/ip link delete ${1}"
+      /sbin/ip link delete ${1}
+      if ! /sbin/ip address show scope global dev ${1%.*} 2>/dev/null | grep -Ewq '(inet|inet6)'; then
+        debug_log "/sbin/ip link set dev ${1%.*} down"
+        /sbin/ip link set dev ${1%.*} down
+      fi
+    fi
+    # Kill wireless daemons if any:
+    if [ -x /etc/rc.d/rc.wireless ]; then
+      . /etc/rc.d/rc.wireless ${1} stop
     fi
-    # Flush the address from the interface:
-    ip address flush dev ${1}
   fi
 }
 
@@ -295,24 +573,39 @@ if_down() {
 
 # Function to bring up the gateway if there is not yet a default route:
 gateway_up() {
-  if ! /sbin/ip route show | grep -wq default ; then
-    if [ -n "$GATEWAY" ]; then
-      echo "/etc/rc.d/rc.inet1:  /sbin/ip route add default via ${GATEWAY}" | $LOGGER
-      /sbin/ip route add default via ${GATEWAY} | $LOGGER
+  info_log "Configuring gateways"
+  # Bring up the IPv4 gateway:
+  if [ -n "$GATEWAY" ]; then
+    if ! /sbin/ip -4 route show | grep -wq default; then
+      debug_log "/sbin/ip -4 route add default via ${GATEWAY}"
+      /sbin/ip -4 route add default via ${GATEWAY}
+    fi
+  fi
+  # Bring up the IPv6 gateway:
+  if [ -n "$GATEWAY6" ]; then
+    if ! /sbin/ip -6 route show | grep -wq default; then
+      debug_log "/sbin/ip -6 route add default via ${GATEWAY6}"
+      /sbin/ip -6 route add default via ${GATEWAY6}
     fi
   fi
 }
 
 # Function to take down an existing default gateway:
 gateway_down() {
-  if /sbin/ip route show | grep -wq default ; then
-    echo "/etc/rc.d/rc.inet1:  /sbin/ip route del default" | $LOGGER
-    /sbin/ip route del default
+  info_log "De-configuring gateways"
+  if /sbin/ip -4 route show | grep -wq default ; then
+    debug_log "/sbin/ip -4 route del default"
+    /sbin/ip -4 route del default
+  fi
+  if /sbin/ip -6 route show | grep -wq default ; then
+    debug_log "/sbin/ip -6 route del default"
+    /sbin/ip -6 route del default
   fi
 }
 
 # Function to start the network:
 start() {
+  echo "Starting the network interfaces..."
   lo_up
   virtif_create
   for i in "${IFNAME[@]}" ; do
@@ -323,9 +616,10 @@ start() {
 
 # Function to stop the network:
 stop() {
+  echo "Stopping the network interfaces..."
   gateway_down
-  for i in "${IFNAME[@]}" ; do
-    if_down $i
+  for (( i = $MAXNICS - 1; i >= 0; i-- )); do
+    if_down ${IFNAME[$i]}
   done
   virtif_destroy
   lo_down
@@ -336,7 +630,7 @@ stop() {
 ### MAIN ###
 ############
 
-case "$1" in
+case "${1}" in
 start|up) # "start" (or "up") brings up all configured interfaces:
   start
   ;;
@@ -354,16 +648,16 @@ lo_stop|lo_down) # Stop the loopback interface:
   lo_down
   ;;
 *_start|*_up) # Example: "eth1_start" (or "eth1_up") will start the specified interface 'eth1'
-  INTERFACE=$(echo $1 | /bin/cut -d '_' -f 1)
+  INTERFACE=$(echo ${1} | /bin/cut -d '_' -f 1)
   if_up $INTERFACE
   gateway_up
   ;;
 *_stop|*_down) # Example: "eth0_stop" (or "eth0_down") will stop the specified interface 'eth0'
-  INTERFACE=$(echo $1 | /bin/cut -d '_' -f 1)
+  INTERFACE=$(echo ${1} | /bin/cut -d '_' -f 1)
   if_down $INTERFACE
   ;;
 *_restart) # Example: "wlan0_restart" will take 'wlan0' down and up again
-  INTERFACE=$(echo $1 | /bin/cut -d '_' -f 1)
+  INTERFACE=$(echo ${1} | /bin/cut -d '_' -f 1)
   if_down $INTERFACE
   sleep 1
   if_up $INTERFACE