[202012] Replace VLAN table with DHCP_RELAY table for verifying ipv6 helpers and add unittests #11794
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@kellyyeh do we need this in 202012? |
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@kellyyeh , can you please add [202012] to title and also the PR thats merged to master? |
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yxieca
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@kellyyeh 202205 is already having dhcp in submodule. Please advance submodule head instead. |
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@yxieca This change is in docker-dhcp-relay and sonic-config-engine, no changes in sonic-dhcp-relay |
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Cherry-pick #10654
Why I did it
dhcp6relay reads ipv6 helpers from DHCP_RELAY table. Docker supervisord should rely on DHCP_RELAY instead of VLAN table to determine if dhcpv6 relay needs to be started. Added "vlan missing ip helper" dhcp relay unittest
How I did it
Change docker supervisord to check for DHCP_RELAY table for ipv6 helpers
Added unittests
How to verify it
Run dhcp_relay docker, ensure ipv6 helper is present is only DHCP_RELAY table and not VLAN table, and dhcp6relay should start up
Which release branch to backport (provide reason below if selected)
Description for the changelog
Link to config_db schema for YANG module changes
A picture of a cute animal (not mandatory but encouraged)