128T network plugin scripts for moving a specified interface ($INTNAME) to a specified bridge ($BRNAME). Logging of these scripts is to systemd journal, and can be view with `journalctl -t kni-attach`.

init.sh

#!/usr/bin/env bash

########################################################
#                                                      #
# This script attaches a network interface a network   #
# bridge. Output is logged to system journal, and can  #
# be viewed with the following:                        #
#                                                      #
#   $ journalctl -t kni-attach                         #
#                                                      #
########################################################

# vars
INTNAME="lan-gw"
BRNAME="lan-br"
RETRYCOUNT="0"
MAXTRIES="5"

# functions
function add2bridge(){
  systemd-cat -t kni-attach brctl addif $BRNAME $INTNAME 
  if [ $? -ne 0 ] ; then
    RETRYCOUNT=$[$RETRYCOUNT+1]
    echo "failed to add interface $INTNAME to bridge $BRNAME" | systemd-cat -t kni-attach
    if [ "$RETRYCOUNT" -lt "$MAXTRIES" ] ; then
      sleep 10
      echo "retry $RETRYCOUNT" | systemd-cat -t kni-attach
      add2bridge
    else
      echo "retry $RETRYCOUNT, giving up" | systemd-cat -t kni-attach
    fi
  else
    echo "sucessfully added interface $INTNAME to bridge $BRNAME" | systemd-cat -t kni-attach
  fi
}

#start
echo "$INTNAME gateway ADDED. Moving to $BRNAME" | systemd-cat -t kni-attach
add2bridge

shutdown.sh

#!/usr/bin/env bash

INTNAME="lan-gw"

echo "$INTNAME gateway REMOVED" | systemd-cat -t kni-attach