multiple relay destinations

Gregory Malsack gregory.malsack at foxvalleymetrology.com
Thu Jul 6 18:36:53 UTC 2023


Hello All,

I'm running isc-dhcrelay-4.4.3-P1 on an alpine linux router for a remote office to connect to our offices via a vpn. Currently we have eth0 on the internet, eth1 with no ip, then various vlans eth1.86 eth1.87 eth1.900 and so on. From what I can tell, isc-dhcrelay only really listens on eth1, thus all of the vlan interface dhcp requests are sent upstream to the dhcrelay server listed in the config file.

The problem I have is that eth1.86 and eth1.87 need to go to dhcp server 1 upstream and eth1.900 needs to go to dhcp server 2 upstream. If dhcrelay can do this great, but I don't know how to do this. I don't have eth1.900 listed in the iface directive, but that doesn't seem to matter because it's relaying dhcp requests on vlan anyway.

Can someone help?

Thanks!
Greg
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