{"action":"opened","issue":{"url":"https://api.github.com/repos/acassen/keepalived/issues/175","labels_url":"https://api.github.com/repos/acassen/keepalived/issues/175/labels{/name}","comments_url":"https://api.github.com/repos/acassen/keepalived/issues/175/comments","events_url":"https://api.github.com/repos/acassen/keepalived/issues/175/events","html_url":"https://github.com/acassen/keepalived/issues/175","id":93997625,"number":175,"title":"vmac startup in standby state interrupted by IPv6","user":{"login":"sim-","id":115418,"avatar_url":"https://avatars.githubusercontent.com/u/115418?v=3","gravatar_id":"","url":"https://api.github.com/users/sim-","html_url":"https://github.com/sim-","followers_url":"https://api.github.com/users/sim-/followers","following_url":"https://api.github.com/users/sim-/following{/other_user}","gists_url":"https://api.github.com/users/sim-/gists{/gist_id}","starred_url":"https://api.github.com/users/sim-/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sim-/subscriptions","organizations_url":"https://api.github.com/users/sim-/orgs","repos_url":"https://api.github.com/users/sim-/repos","events_url":"https://api.github.com/users/sim-/events{/privacy}","received_events_url":"https://api.github.com/users/sim-/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-07-09T09:12:37Z","updated_at":"2015-07-09T09:12:37Z","closed_at":null,"body":"Hello! I was trying vmac mode with v1.2.19, and ran into an issue. With vmac_xmit_base, state BACKUP, and IPv6 available, it emits a few ICMP6 messages from the virtual MAC on startup, which immediately causes the switches to learn the path to it. I don't see how this could work unless IPv6 is disabled or state MASTER on both sides. Without vmac_xmit_base, the elected master sends another VRRP frame fairly quickly and takes back the path, but this still causes some loss whenever a backup node comes online.\r\n\r\n```\r\n04:54:16.697013 00:00:5e:00:01:c6 > 33:33:00:00:00:16, ethertype IPv6 (0x86dd), length 90: :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28\r\n04:54:16.717322 00:1c:73:7d:f1:ed > 00:00:5e:00:01:c6, ethertype IPv4 (0x0800), length 98: 10.130.198.2 > 10.130.198.12: ICMP echo request, id 27189, seq 66, length 64\r\n04:54:16.773015 00:00:5e:00:01:c6 > 33:33:00:00:00:16, ethertype IPv6 (0x86dd), length 90: :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28\r\n04:54:17.017058 00:00:5e:00:01:c6 > 33:33:ff:00:01:c6, ethertype IPv6 (0x86dd), length 78: :: > ff02::1:ff00:1c6: ICMP6, neighbor solicitation, who has fe80::200:5eff:fe00:1c6, length 24\r\n04:54:18.017191 00:00:5e:00:01:c6 > 33:33:00:00:00:02, ethertype IPv6 (0x86dd), length 70: fe80::200:5eff:fe00:1c6 > ff02::2: ICMP6, router solicitation, length 16\r\n04:54:18.717316 00:1c:73:7d:f1:ed > 00:00:5e:00:01:c6, ethertype IPv4 (0x0800), length 98: 10.130.198.2 > 10.130.198.12: ICMP echo request, id 27189, seq 68, length 64\r\n04:54:19.717386 00:1c:73:7d:f1:ed > 00:00:5e:00:01:c6, ethertype IPv4 (0x0800), length 98: 10.130.198.2 > 10.130.198.12: ICMP echo request, id 27189, seq 69, length 64\r\n04:54:20.717305 00:1c:73:7d:f1:ed > 00:00:5e:00:01:c6, ethertype IPv4 (0x0800), length 98: 10.130.198.2 > 10.130.198.12: ICMP echo request, id 27189, seq 70, length 64\r\n```"}}