Strange log line in my router related to MICE route reflector #2

Can anyone decipher what this log line on my Arista means? Jun 26 03:18:58 207.32.15.14 (sxct-north-2.sxcy.fbnt.netins.net) Rib: mpbgp_recv_mpreach: peer 2001:504:27::d1af:0:2 (AS53679-RR-2.micemn.net) (AS 53679 MICEASN, US) link-local next hop fe80::e2ac:f1ef:fe4b:d93b%65536 improper, ignoring this next-hop Frank AS18883