--- pve-container/src/Makefile.lxcnetdelbr	2017-10-23 12:42:08.225637829 +0300

+++ pve-container/src/Makefile	2017-10-23 12:43:27.853741072 +0300

@@ -39,6 +39,7 @@ install: pct lxc-pve.conf lxc-pve-presta

 	install -m 0755 pve-update-lxc-config ${SBINDIR}

 	install -d ${LXC_SCRIPT_DIR}

 	install -m 0755 lxcnetaddbr ${LXC_SCRIPT_DIR}

+	install -m 0755 lxcnetdelbr ${LXC_SCRIPT_DIR}

 	install -m 0755 pve-container-stop-wrapper ${LXC_SCRIPT_DIR}

 	install -d -m0755 ${SERVICEDIR}

 	install -m0644 pve-container@.service ${SERVICEDIR}/

--- pve-container/src/lxcnetdelbr.lxcnetdelbr	2017-10-23 12:42:08.265637880 +0300

+++ pve-container/src/lxcnetdelbr	2017-10-23 12:42:08.265637880 +0300

@@ -0,0 +1,23 @@

+#!/usr/bin/perl

+

+use strict;

+use warnings;

+

+exit 0 if $ENV{LXC_NAME} && $ENV{LXC_NAME} !~ /^\d+$/;

+

+use PVE::Network;

+

+die "got unexpected argument count\n" if scalar(@ARGV) != 5;

+

+my ($vmid, $arg2, $arg3, $type, $iface) = @ARGV;

+

+die "got unexpected argument ($arg2 != net)\n" if $arg2 ne 'net';

+die "got unexpected argument ($arg3 != down)\n" if $arg3 ne 'down';

+die "got unexpected argument ($type != veth)\n" if $type ne 'veth';

+die "got unexpected environment" if $vmid ne $ENV{LXC_NAME};

+die "missing vmid parameter\n" if !$vmid;

+die "missing iface parameter\n" if !$iface;

+

+PVE::Network::tap_unplug($iface);

+

+exit 0;