ubuntu@matter-7-5:~$ tail -f /var/log/syslog
Jan 28 10:06:16 matter-7-5 otbr-agent[1696]: 00:04:49.631 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:230, type:Beacon, src:0xf68f, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:06:17 matter-7-5 otbr-agent[1696]: 00:04:50.507 [INFO]-MAC-----: Received IPv6 UDP msg, len:91, chksum:5216, from:2a56ca06b17d3133, sec:no, prio:net, rss:-32.0, radio:15.4
Jan 28 10:06:17 matter-7-5 otbr-agent[1696]: 00:04:50.507 [INFO]-MAC-----:     src:[fe80:0:0:0:2856:ca06:b17d:3133]:19788
Jan 28 10:06:17 matter-7-5 otbr-agent[1696]: 00:04:50.507 [INFO]-MAC-----:     dst:[ff02:0:0:0:0:0:0:1]:19788
Jan 28 10:06:17 matter-7-5 otbr-agent[1696]: 00:04:50.507 [INFO]-MLE-----: Receive Advertisement (fe80:0:0:0:2856:ca06:b17d:3133,0xb800)
Jan 28 10:06:32 matter-7-5 otbr-agent[1696]: 00:05:05.038 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:27, type:Beacon, src:0x0000, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:06:43 matter-7-5 otbr-agent[1696]: 00:05:16.863 [INFO]-MAC-----: Received IPv6 UDP msg, len:91, chksum:d4be, from:2a56ca06b17d3133, sec:no, prio:net, rss:-30.0, radio:15.4
Jan 28 10:06:43 matter-7-5 otbr-agent[1696]: 00:05:16.863 [INFO]-MAC-----:     src:[fe80:0:0:0:2856:ca06:b17d:3133]:19788
Jan 28 10:06:43 matter-7-5 otbr-agent[1696]: 00:05:16.863 [INFO]-MAC-----:     dst:[ff02:0:0:0:0:0:0:1]:19788
Jan 28 10:06:43 matter-7-5 otbr-agent[1696]: 00:05:16.864 [INFO]-MLE-----: Receive Advertisement (fe80:0:0:0:2856:ca06:b17d:3133,0xb800)
Jan 28 10:06:47 matter-7-5 otbr-agent[1696]: 00:05:20.657 [INFO]-MLE-----: Send Advertisement (ff02:0:0:0:0:0:0:1)
Jan 28 10:06:47 matter-7-5 otbr-agent[1696]: 00:05:20.702 [INFO]-MAC-----: Sent IPv6 UDP msg, len:91, chksum:10be, to:0xffff, sec:no, prio:net, radio:all
Jan 28 10:06:47 matter-7-5 otbr-agent[1696]: 00:05:20.702 [INFO]-MAC-----:     src:[fe80:0:0:0:9c32:f1e:ca5a:9c1e]:19788
Jan 28 10:06:47 matter-7-5 otbr-agent[1696]: 00:05:20.702 [INFO]-MAC-----:     dst:[ff02:0:0:0:0:0:0:1]:19788
Jan 28 10:06:51 matter-7-5 otbr-agent[1696]: 00:05:24.040 [INFO]-MLE-----: Child timeout expired
Jan 28 10:06:51 matter-7-5 otbr-agent[1696]: 00:05:24.040 [NOTE]-ARP-----: Cache entry removed: 2001:db8:0:0:241:73e1:ab03:e280, 0xc001, list:cached - removing rloc16
Jan 28 10:06:51 matter-7-5 otbr-agent[1696]: 00:05:24.040 [INFO]-CORE----: [settings] Read ChildInfo {rloc:0xc001, extaddr:de757326e7b6ce58, timeout:240, mode:0x0f, version:3}
Jan 28 10:06:51 matter-7-5 otbr-agent[1696]: 00:05:24.048 [INFO]-CORE----: [settings] Removed ChildInfo {rloc:0xc001, extaddr:de757326e7b6ce58, timeout:240, mode:0x0f, version:3}
Jan 28 10:06:51 matter-7-5 otbr-agent[1696]: 00:05:24.048 [INFO]-CORE----: Notifier: StateChanged (0x00000800) [Child-]
Jan 28 10:06:56 matter-7-5 otbr-agent[1696]: 00:05:29.924 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:252, type:Beacon, src:0x0000, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:06:56 matter-7-5 otbr-agent[1696]: 00:05:29.948 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:10, type:Beacon, src:0xac8f, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:07:06 matter-7-5 otbr-agent[1696]: 00:05:39.544 [WARN]-PLAT----: [netif] Failed to transmit, error:Drop
Jan 28 10:07:06 matter-7-5 otbr-agent[1696]: 00:05:39.545 [INFO]-CORE----: Notifier: StateChanged (0x00001000) [Ip6Mult+]
Jan 28 10:07:06 matter-7-5 otbr-agent[1696]: 00:05:39.553 [WARN]-PLAT----: [netif] Failed to transmit, error:Parse
Jan 28 10:07:06 matter-7-5 otbr-agent[1696]: 00:05:39.590 [INFO]-MAC-----: Sent IPv6 UDP msg, len:118, chksum:7622, to:0xffff, sec:yes, prio:low, radio:all
Jan 28 10:07:06 matter-7-5 otbr-agent[1696]: 00:05:39.590 [INFO]-MAC-----:     src:[fe80:0:0:0:9c32:f1e:ca5a:9c1e]:57890
Jan 28 10:07:06 matter-7-5 otbr-agent[1696]: 00:05:39.590 [INFO]-MAC-----:     dst:[ff02:0:0:0:0:0:0:fb]:5353
Jan 28 10:07:06 matter-7-5 otbr-agent[1696]: 00:05:39.654 [INFO]-MAC-----: Sent IPv6 UDP msg, len:216, chksum:e1a0, to:0xb800, sec:yes, prio:low, radio:15.4
Jan 28 10:07:06 matter-7-5 otbr-agent[1696]: 00:05:39.655 [INFO]-MAC-----:     src:[2001:db8:0:0:c80e:e339:38c7:3b60]:5542
Jan 28 10:07:06 matter-7-5 otbr-agent[1696]: 00:05:39.655 [INFO]-MAC-----:     dst:[2001:db8:0:0:24b:36bd:6701:ac13]:5540
Jan 28 10:07:06 matter-7-5 otbr-agent[1696]: 00:05:39.692 [WARN]-PLAT----: [netif] Failed to transmit, error:Drop
Jan 28 10:07:06 matter-7-5 otbr-agent[1696]: 00:05:39.694 [NOTE]-PLAT----: [netif] Will not subscribe duplicate multicast address ff02::fb
Jan 28 10:07:16 matter-7-5 otbr-agent[1696]: 00:05:49.667 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:86, type:Beacon, src:0xab6c, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:07:16 matter-7-5 otbr-agent[1696]: 00:05:49.689 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:241, type:Beacon, src:0xf68f, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:07:16 matter-7-5 otbr-agent[1696]: 00:05:49.964 [WARN]-PLAT----: [netif] Failed to transmit, error:Drop
Jan 28 10:07:16 matter-7-5 otbr-agent[1696]: 00:05:49.965 [INFO]-CORE----: Notifier: StateChanged (0x00002000) [Ip6Mult-]
Jan 28 10:07:17 matter-7-5 otbr-agent[1696]: 00:05:50.808 [WARN]-PLAT----: [netif] Failed to transmit, error:Drop
Jan 28 10:07:17 matter-7-5 otbr-agent[1696]: 00:05:50.810 [WARN]-PLAT----: [netif] Failed to unsubscribe multicast address ff02::fb: NotFound
Jan 28 10:07:21 matter-7-5 otbr-agent[1696]: 00:05:54.039 [INFO]-MLE-----: Send Advertisement (ff02:0:0:0:0:0:0:1)
Jan 28 10:07:21 matter-7-5 otbr-agent[1696]: 00:05:54.057 [INFO]-MAC-----: Sent IPv6 UDP msg, len:91, chksum:16d1, to:0xffff, sec:no, prio:net, radio:all
Jan 28 10:07:21 matter-7-5 otbr-agent[1696]: 00:05:54.057 [INFO]-MAC-----:     src:[fe80:0:0:0:9c32:f1e:ca5a:9c1e]:19788
Jan 28 10:07:21 matter-7-5 otbr-agent[1696]: 00:05:54.057 [INFO]-MAC-----:     dst:[ff02:0:0:0:0:0:0:1]:19788
Jan 28 10:07:21 matter-7-5 otbr-agent[1696]: 00:05:54.722 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:253, type:Beacon, src:0x0000, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:07:21 matter-7-5 otbr-agent[1696]: 00:05:54.744 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:201, type:Beacon, src:0x4f3d, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:07:21 matter-7-5 otbr-agent[1696]: 00:05:54.771 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:242, type:Beacon, src:0xf68f, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:07:26 matter-7-5 otbr-agent[1696]: 00:05:59.938 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:175, type:Beacon, src:0xd361, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:07:42 matter-7-5 otbr-agent[1696]: 00:06:15.985 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:26, type:Beacon, src:0x0000, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:07:46 matter-7-5 otbr-agent[1696]: 00:06:19.385 [INFO]-MAC-----: Received IPv6 UDP msg, len:91, chksum:164f, from:2a56ca06b17d3133, sec:no, prio:net, rss:-33.0, radio:15.4
Jan 28 10:07:46 matter-7-5 otbr-agent[1696]: 00:06:19.386 [INFO]-MAC-----:     src:[fe80:0:0:0:2856:ca06:b17d:3133]:19788
Jan 28 10:07:46 matter-7-5 otbr-agent[1696]: 00:06:19.386 [INFO]-MAC-----:     dst:[ff02:0:0:0:0:0:0:1]:19788
Jan 28 10:07:46 matter-7-5 otbr-agent[1696]: 00:06:19.386 [INFO]-MLE-----: Receive Advertisement (fe80:0:0:0:2856:ca06:b17d:3133,0xb800)
Jan 28 10:07:51 matter-7-5 otbr-agent[1696]: 00:06:24.415 [INFO]-MLE-----: Send Advertisement (ff02:0:0:0:0:0:0:1)
Jan 28 10:07:51 matter-7-5 otbr-agent[1696]: 00:06:24.434 [INFO]-MAC-----: Sent IPv6 UDP msg, len:91, chksum:783e, to:0xffff, sec:no, prio:net, radio:all
Jan 28 10:07:51 matter-7-5 otbr-agent[1696]: 00:06:24.434 [INFO]-MAC-----:     src:[fe80:0:0:0:9c32:f1e:ca5a:9c1e]:19788
Jan 28 10:07:51 matter-7-5 otbr-agent[1696]: 00:06:24.434 [INFO]-MAC-----:     dst:[ff02:0:0:0:0:0:0:1]:19788
Jan 28 10:07:51 matter-7-5 otbr-agent[1696]: 00:06:24.807 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:43, type:Beacon, src:0x0000, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:08:00 matter-7-5 otbr-agent[1696]: 00:06:33.628 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:27, type:Beacon, src:0x0000, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:08:11 matter-7-5 otbr-agent[1696]: 00:06:44.470 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:252, type:Beacon, src:0xf68f, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:08:11 matter-7-5 otbr-agent[1696]: 00:06:44.621 [INFO]-MAC-----: Received IPv6 UDP msg, len:91, chksum:3af6, from:2a56ca06b17d3133, sec:no, prio:net, rss:-33.0, radio:15.4
Jan 28 10:08:11 matter-7-5 otbr-agent[1696]: 00:06:44.621 [INFO]-MAC-----:     src:[fe80:0:0:0:2856:ca06:b17d:3133]:19788
Jan 28 10:08:11 matter-7-5 otbr-agent[1696]: 00:06:44.621 [INFO]-MAC-----:     dst:[ff02:0:0:0:0:0:0:1]:19788
Jan 28 10:08:11 matter-7-5 otbr-agent[1696]: 00:06:44.621 [INFO]-MLE-----: Receive Advertisement (fe80:0:0:0:2856:ca06:b17d:3133,0xb800)
Jan 28 10:08:16 matter-7-5 otbr-agent[1696]: 00:06:49.491 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:48, type:Beacon, src:0x0000, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:08:17 matter-7-5 otbr-agent[1696]: 00:06:50.064 [INFO]-MLE-----: Send Advertisement (ff02:0:0:0:0:0:0:1)
Jan 28 10:08:17 matter-7-5 otbr-agent[1696]: 00:06:50.096 [INFO]-MAC-----: Sent IPv6 UDP msg, len:91, chksum:f758, to:0xffff, sec:no, prio:net, radio:all
Jan 28 10:08:17 matter-7-5 otbr-agent[1696]: 00:06:50.097 [INFO]-MAC-----:     src:[fe80:0:0:0:9c32:f1e:ca5a:9c1e]:19788
Jan 28 10:08:17 matter-7-5 otbr-agent[1696]: 00:06:50.097 [INFO]-MAC-----:     dst:[ff02:0:0:0:0:0:0:1]:19788
Jan 28 10:08:34 matter-7-5 otbr-agent[1696]: 00:07:07.818 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:254, type:Beacon, src:0x0000, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:08:41 matter-7-5 otbr-agent[1696]: 00:07:14.577 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:255, type:Beacon, src:0x0000, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:08:43 matter-7-5 otbr-agent[1696]: 00:07:16.488 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:133, type:Beacon, src:0x0000, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:08:48 matter-7-5 otbr-agent[1696]: 00:07:21.881 [INFO]-MAC-----: Received IPv6 UDP msg, len:91, chksum:51e7, from:2a56ca06b17d3133, sec:no, prio:net, rss:-32.0, radio:15.4
Jan 28 10:08:48 matter-7-5 otbr-agent[1696]: 00:07:21.881 [INFO]-MAC-----:     src:[fe80:0:0:0:2856:ca06:b17d:3133]:19788
Jan 28 10:08:48 matter-7-5 otbr-agent[1696]: 00:07:21.881 [INFO]-MAC-----:     dst:[ff02:0:0:0:0:0:0:1]:19788
Jan 28 10:08:48 matter-7-5 otbr-agent[1696]: 00:07:21.881 [INFO]-MLE-----: Receive Advertisement (fe80:0:0:0:2856:ca06:b17d:3133,0xb800)
Jan 28 10:08:51 matter-7-5 otbr-agent[1696]: 00:07:24.847 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:0, type:Beacon, src:0x0000, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:08:51 matter-7-5 otbr-agent[1696]: 00:07:24.906 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:213, type:Beacon, src:0x4f3d, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:08:51 matter-7-5 otbr-agent[1696]: 00:07:24.921 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:4, type:Beacon, src:0xf68f, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:08:51 matter-7-5 otbr-agent[1696]: 00:07:24.932 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:2, type:Beacon, src:0x0000, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:08:56 matter-7-5 otbr-agent[1696]: 00:07:29.641 [INFO]-MLE-----: Send Advertisement (ff02:0:0:0:0:0:0:1)
Jan 28 10:08:56 matter-7-5 otbr-agent[1696]: 00:07:29.663 [INFO]-MAC-----: Sent IPv6 UDP msg, len:91, chksum:7173, to:0xffff, sec:no, prio:net, radio:all
Jan 28 10:08:56 matter-7-5 otbr-agent[1696]: 00:07:29.663 [INFO]-MAC-----:     src:[fe80:0:0:0:9c32:f1e:ca5a:9c1e]:19788
Jan 28 10:08:56 matter-7-5 otbr-agent[1696]: 00:07:29.663 [INFO]-MAC-----:     dst:[ff02:0:0:0:0:0:0:1]:19788
Jan 28 10:09:02 matter-7-5 otbr-agent[1696]: 00:07:35.621 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:179, type:Beacon, src:0x0000, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:09:02 matter-7-5 otbr-agent[1696]: 00:07:35.967 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:3, type:Beacon, src:0x0000, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:09:11 matter-7-5 otbr-agent[1696]: 00:07:44.575 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:1, type:Beacon, src:0x0000, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:09:11 matter-7-5 otbr-agent[1696]: 00:07:44.600 [INFO]-MAC-----: Frame rx failed, error:UnknownNeighbor, len:28, seqnum:4, type:Beacon, src:0x0000, dst:None, sec:no, ackreq:no, radio:15.4
Jan 28 10:09:17 matter-7-5 otbr-agent[1696]: 00:07:50.365 [INFO]-MLE-----: Send Advertisement (ff02:0:0:0:0:0:0:1)
Jan 28 10:09:17 matter-7-5 otbr-agent[1696]: 00:07:50.476 [INFO]-MAC-----: Sent IPv6 UDP msg, len:91, chksum:40d7, to:0xffff, sec:no, prio:net, radio:all
Jan 28 10:09:17 matter-7-5 otbr-agent[1696]: 00:07:50.476 [INFO]-MAC-----:     src:[fe80:0:0:0:9c32:f1e:ca5a:9c1e]:19788
Jan 28 10:09:17 matter-7-5 otbr-agent[1696]: 00:07:50.476 [INFO]-MAC-----:     dst:[ff02:0:0:0:0:0:0:1]:19788
Jan 28 10:09:29 matter-7-5 otbr-agent[1696]: 00:08:02.343 [INFO]-MAC-----: Received IPv6 UDP msg, len:91, chksum:8fe4, from:2a56ca06b17d3133, sec:no, prio:net, rss:-34.0, radio:15.4
Jan 28 10:09:29 matter-7-5 otbr-agent[1696]: 00:08:02.343 [INFO]-MAC-----:     src:[fe80:0:0:0:2856:ca06:b17d:3133]:19788
Jan 28 10:09:29 matter-7-5 otbr-agent[1696]: 00:08:02.343 [INFO]-MAC-----:     dst:[ff02:0:0:0:0:0:0:1]:19788
Jan 28 10:09:29 matter-7-5 otbr-agent[1696]: 00:08:02.343 [INFO]-MLE-----: Receive Advertisement (fe80:0:0:0:2856:ca06:b17d:3133,0xb800)