if [[ $OPT_BRIDGE_ != '' && $OPT_AUTO_ == 'true' ]]; then
tmp_="`brctl showmacs "$OPT_BRIDGE_" |wc -l`"
if (( $tmp_ == 1 )); then
+ ip link set down dev "$OPT_BRIDGE_"
brctl delbr "$OPT_BRIDGE_"
else
die "E: bridge $OPT_BRIDGE_ not empty, not removing"