sonic-buildimage/dockers/docker-lldp/waitfor_lldp_ready.sh

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#!/bin/bash
# Current lldpd version has a bug.
# When lldpd starts it is in the pause state by default
# But then it execute 'lldpcli resume' to configure and unpause itself.
# When lldpd execute lldpcli, it doesn't check the return code
# Sometimes lldpcli returns failure, but lldpd doesn't catch it
# and keeps working paused and unconfigured
#
# The fix below addresses the issue.
#
# wait until lldpd started
until [[ -e /var/run/lldpd.socket ]];
do
sleep 1;
done
# Manually try to resume lldpd, until it's successful
while /bin/true;
do
lldpcli -u /var/run/lldpd.socket -c /etc/lldpd.conf -c /etc/lldpd.d resume > /dev/null && break
sleep 1
done