Hi Tomek, I have not tried UDP as I was under the impression this is only used when the DHCP subnet was directly connected. Everything I am doing requires DHCP RELAY. I will need to go back and see if there is a way to specify the loopback to be a UDP socket. The other idea I had was specifying the loopback address on every interface. Seems like a less than elegant solution though.
Thanks, Jason On Wed, Apr 19, 2017 at 11:00 AM, Tomek Mrugalski <[email protected]> wrote: > W dniu 19.04.2017 o 16:35, Jason Guy pisze: > > I would like to leverage my routing on the host setup, and bind the kea > > service to the loopback address I have configured. This would ultimately > > allow me to deploy multiple kea servers with an "anycast" reachability. > > > > ip addr show lo > > ... > > inet 10.50.5.11/32 <http://10.50.5.11/32> brd 10.50.5.11 scope > > global lo:1 > > ... > > > > Kea.conf: > > ... > > "interfaces-config": { > > "interfaces": [ > > "lo/10.50.5.11 <http://10.50.5.11>", > > "eth0", > > "eth1" > > ] > > }, > > .... > > > > I have tried specifying this in a few ways, and the DHCP relay packets > > reach the server, but Kea does not appear to process them. I thought > > about putting the loopback on the ethernet interfaces as secondary > > addresses, but wanted to understand why I can see the relay packets > > arrive but not picked up by Kea. > Kea uses raw sockets by default to receive DHCPv4 traffic. Raw sockets > receive raw packets, i.e. everything that comes over wire (ethernet > header, ip, udp and everything that follows). This is different on > loopback as there's no notion of ethernet headers there. Kea has some > support for loopback traffic handling, but it's not used extensively, so > did not receive much testing. > > Have you tried setting dhcp-socket-type to udp? If that doesn't help at > all, can you open a ticket for this? > > Tomek > > _______________________________________________ > Kea-users mailing list > [email protected] > https://lists.isc.org/mailman/listinfo/kea-users >
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