[202012] dhcprelay add Loopback0 as source interface in dualtor scenario #15744
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Why I did it
sonic-build image side change to fix source interface selection in dual tor scenario.
dhcprelay related PR:
[202012] fix dual-tor relay-reply handing issue sonic-dhcp-relay#40
Announce dhcprelay submodule to 3578eb3 (to invoke #40 PR)
Work item tracking
How I did it
How to verify it
run test case, dhcp_relay/test_dhcpv6_relay.py
Which release branch to backport (provide reason below if selected)
Tested branch (Please provide the tested image version)
Description for the changelog
Link to config_db schema for YANG module changes
A picture of a cute animal (not mandatory but encouraged)