Not sure what happened here, wonder if it's of some concern, and if someone can figure it out.
x86 box, a Zotac Ci327, running 21.02.0 stable. Happened about 2 days after the update to 21.02.0.
Home router, with separate AP, standard household of 3 people load, TV watching, video/audio calls, some gaming.
Log snip, showing some rebind notices I occasionally get, before the event. I've seen the packet with own address event rarely in the past, never in a big storm like this. Eth0 is the LAN side, corresponding to br-lan.
This all happened in a pretty short time, and was not noticed as an outage. Haven't noticed any issues since
Mon Oct 11 18:16:14 2021 daemon.warn dnsmasq[19616]: possible DNS-rebind attack detected: redirect-test.flive.ixigua.com
Mon Oct 11 19:07:53 2021 daemon.warn dnsmasq[19616]: possible DNS-rebind attack detected: redirect-test.flive.ixigua.com
Mon Oct 11 19:12:56 2021 daemon.warn dnsmasq[19616]: possible DNS-rebind attack detected: redirect-test.flive.ixigua.com
Mon Oct 11 19:18:00 2021 daemon.warn dnsmasq[19616]: possible DNS-rebind attack detected: redirect-test.flive.ixigua.com
Mon Oct 11 19:23:04 2021 daemon.warn dnsmasq[19616]: possible DNS-rebind attack detected: redirect-test.flive.ixigua.com
Mon Oct 11 19:28:07 2021 daemon.warn dnsmasq[19616]: possible DNS-rebind attack detected: redirect-test.flive.ixigua.com
Mon Oct 11 19:33:10 2021 daemon.warn dnsmasq[19616]: possible DNS-rebind attack detected: redirect-test.flive.ixigua.com
Mon Oct 11 19:34:21 2021 daemon.warn dnsmasq[19616]: possible DNS-rebind attack detected: redirect-test.flive.ixigua.com
Mon Oct 11 19:39:25 2021 daemon.warn dnsmasq[19616]: possible DNS-rebind attack detected: redirect-test.flive.ixigua.com
Mon Oct 11 20:59:10 2021 kern.warn kernel: [284459.602749] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:10 2021 kern.warn kernel: [284459.615194] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:10 2021 kern.warn kernel: [284459.627540] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:10 2021 kern.warn kernel: [284459.639919] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:10 2021 kern.warn kernel: [284459.652222] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:11 2021 kern.warn kernel: [284459.664374] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:11 2021 kern.warn kernel: [284459.676542] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:11 2021 kern.warn kernel: [284459.688665] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:11 2021 kern.warn kernel: [284459.700611] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:11 2021 kern.warn kernel: [284459.712509] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:15 2021 kern.warn kernel: [284464.606347] net_ratelimit: 42306 callbacks suppressed
Mon Oct 11 20:59:15 2021 kern.warn kernel: [284464.606353] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:15 2021 kern.warn kernel: [284464.627141] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:15 2021 kern.warn kernel: [284464.640364] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:15 2021 kern.warn kernel: [284464.653678] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:16 2021 kern.warn kernel: [284464.666803] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:16 2021 kern.warn kernel: [284464.679786] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:16 2021 kern.warn kernel: [284464.692790] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:16 2021 kern.warn kernel: [284464.705704] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:16 2021 kern.warn kernel: [284464.718537] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:16 2021 kern.warn kernel: [284464.731195] br-lan: received packet on eth0 with own address as source address (addr:00:01:xx:xx:xx:xx, vlan:0)
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284472.765951] ------------[ cut here ]------------
Mon Oct 11 20:59:24 2021 kern.info kernel: [284472.772470] NETDEV WATCHDOG: eth0 (r8169): transmit queue 0 timed out
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284472.781021] WARNING: CPU: 0 PID: 0 at 0xffffffff8179733c
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284472.788291] Modules linked in: xt_connlimit pppoe ppp_async nf_conncount iptable_nat xt_state xt_nat xt_helper xt_conntrack xt_connmark xt_connbytes xt_REDIRECT xt_MASQUERADE xt_FLOWOFFLOAD xt_CT pppox ppp_generic nf_nat nf_flow_table_hw nf_flow_table nf_conntrack ipt_REJECT xt_time xt_tcpudp xt_tcpmss xt_statistic xt_recent xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_ecn xt_dscp xt_comment xt_TCPMSS xt_LOG xt_HL xt_DSCP xt_CLASSIFY slhc sch_cake r8169 nf_reject_ipv4 nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 iptable_raw iptable_mangle iptable_filter ipt_ECN ip_tables forcedeth e1000e crc_ccitt bnx2 sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred act_gact i2c_dev xt_set ip_set_list_set ip_set_hash_netportnet ip_set_hash_netport ip_set_hash_netnet ip_set_hash_netiface ip_set_hash_net ip_set_hash_mac ip_set_hash_ipportnet ip_set_hash_ipportip ip_set_hash_ipport ip_set_hash_ipmark ip_set_hash_ip
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284472.788363] ip_set_bitmap_port ip_set_bitmap_ipmac ip_set_bitmap_ip ip_set nfnetlink nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 ixgbe igb e1000 ifb mdio vfat fat nls_utf8 nls_iso8859_1 nls_cp437 button_hotplug ptp realtek pps_core mii libphy
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284472.925367] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.143 #0
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284472.934303] Hardware name: NA ZBOX-CI327NANO-GS-01/ZBOX-CI327NANO-GS-01, BIOS 5.12 04/26/2018
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284472.946041] RIP: 0010:0xffffffff8179733c
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284472.952942] Code: 00 49 63 4d e0 eb 92 4c 89 e7 c6 05 be 15 90 00 01 e8 a8 37 fc ff 89 d9 4c 89 e6 48 c7 c7 b8 b6 f7 81 48 89 c2 e8 aa fd 11 00 <0f> 0b eb c0 55 48 89 e5 41 57 49 89 d7 41 56 4d 89 c6 41 55 49 89
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284472.978788] RSP: 0018:ffffc90000003e90 EFLAGS: 00010286
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284472.987458] RAX: 0000000000000039 RBX: 0000000000000000 RCX: 0000000000000000
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284472.998267] RDX: ffff88817bc1cec0 RSI: ffff88817bc174d8 RDI: ffff88817bc174d8
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.009093] RBP: ffffc90000003ec0 R08: 0000000000000000 R09: 00000000000002a1
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.020000] R10: 0000000000000001 R11: 0000000000000001 R12: ffff88817a222000
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.030944] R13: ffff88817a222480 R14: 0000000000000001 R15: 0000000000000000
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.041948] FS: 0000000000000000(0000) GS:ffff88817bc00000(0000) knlGS:0000000000000000
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.053968] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.063613] CR2: 000000000158d640 CR3: 0000000002008000 CR4: 00000000003406f0
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.074807] Call Trace:
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.081005] <IRQ>
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.086781] ? 0xffffffff81797120
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.093998] 0xffffffff81107556
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.101056] 0xffffffff81107724
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.108122] ? 0xffffffff81045417
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.115331] ? 0xffffffff81113b3b
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.122579] 0xffffffff81c000c9
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.129645] 0xffffffff810b371f
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.136686] 0xffffffff81a01c26
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.143619] 0xffffffff81a0163f
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.150577] </IRQ>
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.156431] RIP: 0010:0xffffffff816e8227
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.164284] Code: 89 c6 e8 cc d4 9e ff 45 84 ff 74 17 9c 58 0f 1f 44 00 00 f6 c4 02 0f 85 67 01 00 00 31 ff e8 30 bd a2 ff fb 66 0f 1f 44 00 00 <45> 85 ed 0f 88 c5 00 00 00 49 63 cd 4c 2b 75 d0 48 8d 04 49 48 c1
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.192033] RSP: 0018:ffffffff82003e08 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.204156] RAX: ffff88817bc1f940 RBX: ffffffff820521e0 RCX: 000000000000001f
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.215861] RDX: 000102b9fa29333d RSI: 0000000074f5853d RDI: 0000000000000000
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.227691] RBP: ffffffff82003e38 R08: 0000000000000000 R09: 000000000001f1c0
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.239476] R10: 00011b2c9213a9b8 R11: 0000000000000010 R12: ffff88817bc28700
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.251232] R13: 0000000000000007 R14: 000102b9fa29333d R15: 0000000000000000
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.262934] ? 0xffffffff816e8204
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.270606] 0xffffffff816e83ff
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.278125] 0xffffffff810d566e
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.285643] 0xffffffff810d5874
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.293173] 0xffffffff810d5a98
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.300668] 0xffffffff818f6094
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.308206] 0xffffffff820d39ec
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.315726] 0xffffffff820d3f81
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.323254] 0xffffffff820d3421
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.330806] 0xffffffff820d3494
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.338266] 0xffffffff810000d4
Mon Oct 11 20:59:24 2021 kern.warn kernel: [284473.345678] ---[ end trace 36960cb7683bfb05 ]---
Mon Oct 11 20:59:24 2021 kern.err kernel: [284473.438846] r8169 0000:02:00.0 eth0: rtl_txcfg_empty_cond == 0 (loop: 666, delay: 100).
Mon Oct 11 20:59:35 2021 kern.err kernel: [284483.858332] r8169 0000:02:00.0 eth0: rtl_txcfg_empty_cond == 0 (loop: 666, delay: 100).
Mon Oct 11 20:59:41 2021 kern.err kernel: [284489.746113] r8169 0000:02:00.0 eth0: rtl_txcfg_empty_cond == 0 (loop: 666, delay: 100).
Mon Oct 11 20:59:51 2021 kern.err kernel: [284499.733781] r8169 0000:02:00.0 eth0: rtl_txcfg_empty_cond == 0 (loop: 666, delay: 100).
Mon Oct 11 20:59:54 2021 daemon.info dnsmasq[19616]: read /etc/hosts - 4 addresses
Mon Oct 11 20:59:54 2021 daemon.info dnsmasq[19616]: read /tmp/hosts/odhcpd - 12 addresses
Mon Oct 11 20:59:54 2021 daemon.info dnsmasq[19616]: read /tmp/hosts/dhcp.cfg01411c - 1 addresses
Mon Oct 11 20:59:54 2021 daemon.info dnsmasq-dhcp[19616]: read /etc/ethers - 0 addresses