It is very annoying to see those port flipping info on the log. There is no reply from Mikrotik support yet.
[brg3466@RB5009] > log print where topics~"interface"
jan/18 19:18:33 interface,info ether1 link down
jan/18 19:18:33 interface,info ether2 link down
jan/18 19:18:33 interface,info ether5 link down
jan/18 19:18:33 interface,info ether6 link down
jan/18 19:18:33 interface,info ether8 link down
jan/18 19:18:33 interface,info sfp-sfpplus1 link down
jan/18 19:18:34 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/18 19:18:38 interface,info ether2 link up (speed 100M, full duplex)
jan/18 19:18:38 interface,info ether5 link up (speed 1G, full duplex)
jan/18 19:18:38 interface,info ether6 link up (speed 1G, full duplex)
jan/18 19:18:38 interface,info ether8 link up (speed 1G, full duplex)
jan/18 19:18:38 interface,info ether1 link up (speed 2.5G, full duplex)
jan/18 22:16:33 interface,info ether6 link down
jan/19 03:10:52 interface,info sfp-sfpplus1 link down
jan/19 03:10:52 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/19 05:02:32 interface,info ether6 link up (speed 1G, full duplex)
jan/19 06:10:08 interface,info sfp-sfpplus1 link down
jan/19 06:10:08 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/19 18:48:51 interface,info ether6 link down
jan/19 18:49:21 interface,info ether6 link up (speed 1G, full duplex)
jan/19 18:54:21 interface,info sfp-sfpplus1 link down
jan/19 18:54:21 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/20 05:46:28 interface,info sfp-sfpplus1 link down
jan/20 05:46:28 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/21 11:41:12 interface,info ether6 link down
jan/21 12:01:21 interface,info ether6 link up (speed 1G, full duplex)
jan/21 12:33:12 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/21 12:33:14 interface,info ether2 link up (speed 100M, full duplex)
jan/21 12:33:15 interface,info ether6 link up (speed 1G, full duplex)
jan/21 12:33:15 interface,info ether8 link up (speed 1G, full duplex)
jan/21 12:33:16 interface,info ether1 link up (speed 2.5G, full duplex)
jan/21 12:33:16 interface,info ether5 link up (speed 1G, full duplex)
jan/21 12:33:27 interface,info ether5 link down
jan/21 12:33:30 interface,info ether5 link up (speed 1G, full duplex)
jan/21 22:54:27 interface,info ether6 link down
jan/22 00:01:23 interface,info ether6 link up (speed 1G, full duplex)
jan/22 15:32:17 interface,info sfp-sfpplus1 link down
jan/22 15:32:17 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/22 20:49:48 interface,info sfp-sfpplus1 link down
jan/22 20:49:48 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/23 02:39:04 interface,info sfp-sfpplus1 link down
jan/23 02:39:05 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/23 12:32:07 interface,info ether6 link down
jan/23 12:53:21 interface,info ether6 link up (speed 1G, full duplex)
jan/23 16:52:11 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/23 16:52:11 interface,info WG11 link up
jan/23 16:52:11 interface,info WG12 link up
jan/23 16:52:12 interface,info WG14 link up
jan/23 16:52:12 interface,info WG15 link up
jan/23 16:52:12 interface,info WG17 link up
jan/23 16:52:21 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/23 16:52:22 interface,info ether2 link up (speed 100M, full duplex)
jan/23 16:52:24 interface,info ether6 link up (speed 1G, full duplex)
jan/23 16:52:24 interface,info ether8 link up (speed 1G, full duplex)
jan/23 16:52:25 interface,info ether1 link up (speed 2.5G, full duplex)
jan/23 16:52:25 interface,info ether5 link up (speed 1G, full duplex)
jan/23 16:52:33 interface,info ether5 link down
jan/23 16:52:36 interface,info ether5 link up (speed 1G, full duplex)
jan/23 16:55:48 interface,info sfp-sfpplus1 link down
jan/23 16:55:48 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/23 16:57:13 interface,info sfp-sfpplus1 link down
jan/23 16:57:13 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/23 17:59:46 interface,info ether6 link down
jan/23 18:08:29 interface,info ether6 link up (speed 1G, full duplex)
jan/23 18:34:29 interface,info ether6 link down
jan/23 19:29:22 interface,info ether6 link up (speed 1G, full duplex)
jan/23 19:29:42 interface,info ether6 link down
jan/23 19:33:21 interface,info ether6 link up (speed 1G, full duplex)
jan/23 23:12:13 interface,info ether6 link down
jan/24 06:27:15 interface,info ether8 link down
jan/24 06:27:22 interface,info ether8 link up (speed 1G, full duplex)
jan/24 06:27:38 interface,info ether8 link down
jan/24 06:27:42 interface,info ether8 link up (speed 1G, full duplex)
jan/24 13:04:27 interface,info ether6 link up (speed 1G, full duplex)
jan/24 14:01:51 interface,info ether6 link down
jan/24 21:43:00 interface,info ether6 link up (speed 1G, full duplex)
jan/24 21:48:28 interface,info ether6 link down
jan/24 21:48:38 interface,info ether6 link up (speed 1G, full duplex)
jan/24 22:03:13 interface,info ether6 link down
jan/24 22:03:15 interface,info ether6 link up (speed 1G, full duplex)
jan/24 23:35:04 interface,info ether6 link down
jan/24 23:39:28 interface,info ether6 link up (speed 1G, full duplex)
jan/24 23:39:42 interface,info ether6 link down
jan/24 23:43:28 interface,info ether6 link up (speed 1G, full duplex)
jan/25 03:39:02 interface,info sfp-sfpplus1 link down
jan/25 03:39:02 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/25 04:46:39 interface,info sfp-sfpplus1 link down
jan/25 04:46:39 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/25 17:09:44 interface,info sfp-sfpplus1 link down
jan/25 17:09:44 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/25 22:39:54 interface,info ether2 link down
jan/25 22:41:01 interface,info ether2 link up (speed 100M, full duplex)
jan/25 22:41:23 interface,info ether2 link down
jan/25 22:41:32 interface,info ether2 link up (speed 100M, full duplex)
jan/25 22:41:35 interface,info ether2 link down
jan/25 22:41:41 interface,info ether2 link up (speed 100M, full duplex)
jan/25 22:42:02 interface,info ether2 link down
jan/25 22:42:09 interface,info ether2 link up (speed 100M, full duplex)
jan/25 22:46:53 interface,info ether2 link down
jan/25 22:46:57 interface,info ether2 link up (speed 100M, full duplex)
jan/25 22:47:19 interface,info ether2 link down
jan/25 22:47:27 interface,info ether2 link up (speed 100M, full duplex)
jan/26 11:25:35 interface,info ether6 link down
jan/26 12:03:15 interface,info ether6 link up (speed 1G, full duplex)
jan/26 14:18:37 interface,info ether7 link up (speed 1G, full duplex)
jan/26 14:18:38 interface,info ether7 link down
jan/26 14:18:41 interface,info ether7 link up (speed 1G, full duplex)
jan/26 14:18:42 interface,info ether7 link down
jan/26 14:18:46 interface,info ether7 link up (speed 1G, full duplex)
jan/26 14:34:48 interface,info ether6 link down
jan/26 17:57:48 interface,info ether6 link up (speed 1G, full duplex)
jan/26 18:11:28 interface,info ether7 link down
jan/26 18:12:22 interface,info ether7 link up (speed 1G, full duplex)
jan/26 18:12:23 interface,info ether7 link down
jan/26 18:12:31 interface,info ether7 link up (speed 1G, full duplex)
jan/26 18:19:34 interface,info ether7 link down
jan/26 18:26:01 interface,info ether6 link down
jan/26 20:36:28 interface,info ether6 link up (speed 1G, full duplex)
jan/26 20:52:20 interface,info ether6 link down
jan/26 20:55:11 interface,info ether6 link up (speed 1G, full duplex)
jan/26 21:02:35 interface,info ether6 link down
jan/26 21:03:27 interface,info ether6 link up (speed 1G, full duplex)
jan/26 21:20:07 interface,info ether6 link down
jan/26 22:06:42 interface,info ether6 link up (speed 1G, full duplex)
jan/26 22:53:56 interface,info ether6 link down
jan/26 23:31:27 interface,info sfp-sfpplus1 link down
jan/26 23:31:27 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/27 04:31:19 interface,info sfp-sfpplus1 link down
jan/27 04:31:19 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/27 13:06:16 interface,info ether6 link up (speed 1G, full duplex)
jan/27 20:15:21 interface,info ether6 link down
jan/27 21:42:50 interface,info ether6 link up (speed 1G, full duplex)
jan/27 22:40:23 interface,info ether6 link down
jan/27 22:40:27 interface,info ether6 link up (speed 1G, full duplex)
jan/27 22:42:07 interface,info ether6 link down
jan/27 22:45:50 interface,info ether6 link up (speed 1G, full duplex)
jan/27 22:45:59 interface,info ether6 link down
jan/27 22:46:23 interface,info ether6 link up (speed 1G, full duplex)
jan/28 04:25:01 interface,info sfp-sfpplus1 link down
jan/28 04:25:01 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/28 12:47:55 interface,info ether6 link down
jan/28 15:21:50 interface,info ether6 link up (speed 1G, full duplex)
jan/28 19:16:24 interface,info sfp-sfpplus1 link down
jan/28 19:16:24 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/29 13:32:46 interface,info ether7 link up (speed 1G, full duplex)
jan/29 13:32:48 interface,info ether7 link down
jan/29 13:32:51 interface,info ether7 link up (speed 1G, full duplex)
jan/29 13:32:53 interface,info ether7 link down
jan/29 13:32:56 interface,info ether7 link up (speed 1G, full duplex)
jan/29 16:23:00 interface,info sfp-sfpplus1 link down
jan/29 16:23:00 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/29 16:26:21 interface,info sfp-sfpplus1 link down
jan/29 16:26:21 interface,info sfp-sfpplus1 link up (speed 10G, full duplex)
jan/29 18:09:15 interface,info ether7 link down
jan/29 18:09:41 interface,info ether7 link up (speed 1G, full duplex)
jan/29 18:09:42 interface,info ether7 link down
jan/29 18:09:50 interface,info ether7 link up (speed 1G, full duplex)
jan/29 20:39:18 interface,info ether7 link down
jan/29 20:39:43 interface,info ether7 link up (speed 1G, full duplex)
jan/29 20:39:44 interface,info ether7 link down
jan/29 20:39:49 interface,info ether7 link up (speed 1G, full duplex)
jan/29 22:39:49 interface,info ether6 link down
03:01:51 interface,info ether6 link up (speed 1G, full duplex)