EIGRP Adjacency flapping, IPv6

Feb 13 11:52:38.554: %DUAL-5-NBRCHANGE: EIGRP-IPv6 100: Neighbor FE80::2 (Ethernet0/0) is down: holding time expired

*Feb 13 11:52:46.255: %DUAL-5-NBRCHANGE: EIGRP-IPv6 100: Neighbor FE80::1 (Ethernet0/0) is up: new adjacency

*Feb 13 11:52:50.946: %DUAL-5-NBRCHANGE: EIGRP-IPv6 100: Neighbor FE80::2 (Ethernet0/0) is up: new adjacency

*Feb 13 11:53:01.260: %DUAL-5-NBRCHANGE: EIGRP-IPv6 100: Neighbor FE80::1 (Ethernet0/0) is down: holding time expired

*Feb 13 11:53:01.262: EIGRP: Build goodbye tlv for FE80::1

*Feb 13 11:53:05.955: %DUAL-5-NBRCHANGE: EIGRP-IPv6 100: Neighbor FE80::2 (Ethernet0/0) is down: holding time expired

*Feb 13 11:53:27.259: %DUAL-5-NBRCHANGE: EIGRP-IPv6 100: Neighbor FE80::1 (Ethernet0/0) is up: new adjacency

*Feb 13 11:53:32.060: %DUAL-5-NBRCHANGE: EIGRP-IPv6 100: Neighbor FE80::2 (Ethernet0/0) is up: new adjacency

*Feb 13 11:53:42.267: %DUAL-5-NBRCHANGE: EIGRP-IPv6 100: Neighbor FE80::1 (Ethernet0/0) is down: holding time expired

*Feb 13 11:53:42.276: EIGRP: Build goodbye tlv for FE80::1