Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

//etc/network/if-down.d/avahi-autoipd

 #!/bin/sh

set -e

# Description:      Remove routes to allow communication between machines which
#                   only have an IPv4LL address assigned and those which only
#                   have a routable address assigned. These were added by
#                   /etc/network/if-up.d/avahi-autoipd.
#
#                   See http://developer.apple.com/qa/qa2004/qa1357.html for
#                   more information.

[ -x /usr/sbin/avahi-autoipd ] || exit 0

[ "$IFACE" != "lo" ] || exit 0
case "$ADDRFAM" in
	inet) ;;
	*) exit 0 ;;
esac
case "$METHOD" in
	static|dhcp|NetworkManager) ;;
	*) exit 0 ;;
esac

if [ -x /bin/ip ]; then
	# route already present?
	ip route show | grep -q '^169.254.0.0/16[[:space:]]' && exit 0

	/bin/ip route del 169.254.0.0/16 dev $IFACE metric 1000 scope link || true
elif [ -x /sbin/route ]; then
	# route already present?
	/sbin/route -n | grep -q "^169.254.0.0[[:space:]]" && exit 0

	/sbin/route del -net 169.254.0.0 netmask 255.255.0.0 dev $IFACE metric 1000 || true
fi