[doc][dhcp6relay] Add VRF support to the DHCPv6 relay HLD - #2424
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[doc][dhcp6relay] Add VRF support to the DHCPv6 relay HLD#2424AnantKishorSharma wants to merge 2 commits into
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…sign The SONiC-native DHCPv6 relay agent reads the DHCP_RELAY table once at startup and requires a dhcp_relay container restart for any subsequent relay configuration change. A container restart is disruptive because it tears down relay state for every VLAN. Signed-off-by: Anant Kishor Sharma <anant.kishor-sharma@hpe.com>
Document VLAN-VRF and server_vrf upstream-socket binding (SO_BINDTODEVICE), applied at runtime without a container restart. Relates to sonic-net/sonic-dhcp-relay#89. Signed-off-by: Anant Kishor Sharma <anant.kishor-sharma@hpe.com>
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Why I did it
Document VRF support for the SONiC-native DHCPv6 relay (
dhcp6relay) — reaching DHCPv6 servers through a non-default VRF.How I did it
Added a VRF Support section to the DHCPv6 relay HLD covering:
SO_BINDTODEVICE).server_vrfon theDHCP_RELAYrow: a shared per-VRF upstream socket is opened and relay-reply demultiplexed by link-address.server_vrfYANG leaf, runtime binding via the config manager (no container restart), and backward compatibility (opt-in; default behavior unchanged).How to verify it
Documentation only.
Relates to sonic-net/sonic-dhcp-relay#89
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