wit-network-config/files/wit-gc

#!/bin/bash
set -Eeuo pipefail

EMPTYBR=$(for br in /sys/devices/virtual/net/br*; do if [ ! -d $br ]; then continue; fi; ls $br/brif/ | grep -qv "vxlan\|vlan" || echo ${br##*/}; done)

for BRIDGE in $EMPTYBR
  do
    echo "removing unused customer bridge/vxlan: $BRIDGE"
    for uplinkif in /sys/devices/virtual/net/$BRIDGE/brif/*; do
      ip link del dev ${uplinkif##*/}
    done
    ip link set down $BRIDGE
    brctl delbr $BRIDGE
done



for route in $(vtysh -c "show ip route kernel" | grep 'unknown inactive' | grep -Po 'K[ >]\* \K\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\/\d{1,3}')
  do
    echo "removing zombie route: $route"
    ip route add blackhole $route
    ip route del $route
done

#for route in $(vtysh -c "show ipv6 route kernel" | grep 'unknown inactive' | awk '{ print $3 }')
#  do
#    echo "removing zombie route: $route"
#    ip route add blackhole $route
#    ip route del $route
#done