[Unbound-users] multicast address alerts in logs

[Michael Watters]

Hello,

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?