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DHCPv6 relay: allow configuring DHCPv6 relay servers#379

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stintel wants to merge 2 commits intomasterfrom
staging/stintel/dhcpv6_relay_servers
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DHCPv6 relay: allow configuring DHCPv6 relay servers#379
stintel wants to merge 2 commits intomasterfrom
staging/stintel/dhcpv6_relay_servers

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@stintel stintel commented Feb 7, 2026

Add a new interface config attribute to allow configuring one or more DHCPv6 server IP addresses to relay the DHCPv6 request to.

If the DHCPv6 server is behind another router, forwarding the request to ff05::1:3 will not work, unless multicast routing has been set up. As multicast routing is extremely difficult to set up correctly, and specifying an IP address to forward the request to is very common in other DHCP relay agents, odhcpd should support this.

Add a new interface config attribute to allow configuring one or more
DHCPv6 server IP addresses to relay the DHCPv6 request to.

If the DHCPv6 server is behind another router, forwarding the request to
ff05::1:3 will not work, unless multicast routing has been set up. As
multicast routing is extremely difficult to set up correctly, and
specifying an IP address to forward the request to is very common in
other DHCP relay agents, odhcpd should support this.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
If one or more DHCPv6 relay servers are configured for the interface we
receive the DHCPv6 Solicit Message on, forward it to those servers.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
@stintel stintel requested a review from Noltari February 7, 2026 14:26
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