Michael Watters <wattersmt at gmail.com> wrote: > > We are running several unbound nodes using anycast and I keep seeing > this error in the log files. > > Jan 18 11:07:15 rcn-b3s5-01 unbound: [3856:0] notice: sendto failed: Invalid argument > Jan 18 11:07:15 rcn-b3s5-01 unbound: [3856:0] notice: remote address is 244.254.254.254 port 53 > > Are these anything to worry about? What does this message actually mean? > Yes, as DNS queries are not being forwarded and most probably will fail. The problem is that the source IP for those queries is probably incorrect, I am pretty sure 'outgoing-interface:' solves the problem but the proper way to solve it is to put your *anycast* address on your loopback interface :) My website covers a anycasting with unbound (and DNS blacklisting): http://www.digriz.org.uk/ha-ospf-anycast Cheers -- Alexander Clouter .sigmonster says: There are new messages.