ブリッジを削除

brctl show | grep br-

sudo ip link set dev br-e76bba7d2af3 down
sudo brctl delbr br-e76bba7d2af3

for b in `brctl show | grep br- | awk '{print $1}'`  
do
  sudo ip link set dev $b down
  sleep 1
  sudo brctl delbr $b
  echo "+++ Deleted $b +++"
done