[Kea-users] DHCP6 subnet select fails. Basic config

[Francis Dupont]

Tim Howe writes:
> ...
> 2018-01-22 12:11:34.743 DEBUG [kea-dhcp6.packets/55758] DHCP6_RESPONSE_DATA r
> esponding with packet type 2 data is localAddr=[2607:fda0:101:1600::2]:547 re
> moteAddr=[2607:fda0:101:1601::1]:547
> msgtype=2(ADVERTISE), transid=0xa09dfc
>
> 2018-01-22 12:11:34.743 ERROR [kea-dhcp6.packets/55758] DHCP6_PACKET_SEND_FAI
> L failed to send DHCPv6 packet: pkt6 send failed: sendmsg() returned with an 
> error: No route to host

=> 2607:fda0:101:1601::1 (the relay closest to the server) is not
reachable according to the kernel which returns an error on sendmsg()
system call. IMHO something is wrong in the server system configuration.
BTW if the problem is the packet should be sent on an interface which is
not the incoming interface the outbound-interface clause allows to use
either the incoming interface (same-as-inbound) or the route table
(use-routing).

Thanks

Francis Dupont <fdupont at isc.org>