tcpdump: listening on enp62s0u1u4, link-type EN10MB (Ethernet), capture size 262144 bytes 05:44:53.497892 IP6 (flowlabel 0xc542a, hlim 64, next-header TCP (6) payload length: 40) 2001:41d0:fe0b:8000:9a64:ff80:35b8:7d03.60060 > 2a04:4e42:9::223.443: Flags [S], cksum 0xa71f (incorrect -> 0xe0ca), seq 1194118223, win 27920, options [mss 1396,sackOK,TS val 4154219523 ecr 0,nop,wscale 7], length 0 05:44:53.551648 IP6 (flowlabel 0x2ddfb, hlim 57, next-header TCP (6) payload length: 40) 2a04:4e42:9::223.443 > 2001:41d0:fe0b:8000:9a64:ff80:35b8:7d03.60060: Flags [S.], cksum 0xaae9 (correct), seq 2329432500, ack 1194118224, win 27360, options [mss 1380,sackOK,TS val 1667233825 ecr 4154219523,nop,wscale 9], length 0 05:44:53.551700 IP6 (flowlabel 0xc542a, hlim 64, next-header TCP (6) payload length: 32) 2001:41d0:fe0b:8000:9a64:ff80:35b8:7d03.60060 > 2a04:4e42:9::223.443: Flags [.], cksum 0xa717 (incorrect -> 0x4337), seq 1, ack 1, win 219, options [nop,nop,TS val 4154219577 ecr 1667233825], length 0 05:44:53.595504 IP6 (flowlabel 0xc542a, hlim 64, next-header TCP (6) payload length: 233) 2001:41d0:fe0b:8000:9a64:ff80:35b8:7d03.60060 > 2a04:4e42:9::223.443: Flags [P.], cksum 0xa7e0 (incorrect -> 0xb232), seq 1:202, ack 1, win 219, options [nop,nop,TS val 4154219620 ecr 1667233825], length 201 05:44:53.653031 IP6 (flowlabel 0x2ddfb, hlim 57, next-header TCP (6) payload length: 1380) 2a04:4e42:9::223.443 > 2001:41d0:fe0b:8000:9a64:ff80:35b8:7d03.60060: Flags [.], cksum 0xc00e (correct), seq 1:1349, ack 202, win 56, options [nop,nop,TS val 1667233850 ecr 4154219620], length 1348 05:44:53.653138 IP6 (flowlabel 0xc542a, hlim 64, next-header TCP (6) payload length: 32) 2001:41d0:fe0b:8000:9a64:ff80:35b8:7d03.60060 > 2a04:4e42:9::223.443: Flags [.], cksum 0xa717 (incorrect -> 0x3c97), seq 202, ack 1349, win 240, options [nop,nop,TS val 4154219678 ecr 1667233850], length 0 05:44:53.654047 IP6 (flowlabel 0x2dd03, hlim 57, next-header TCP (6) payload length: 2472) 2a04:4e42:9::223.443 > 2001:41d0:fe0b:8000:9a64:ff80:35b8:7d03.60060: Flags [P.], cksum 0xb09f (incorrect -> 0x97c8), seq 1349:3789, ack 202, win 56, options [nop,nop,TS val 1667233850 ecr 4154219620], length 2440 05:44:53.654114 IP6 (flowlabel 0xc542a, hlim 64, next-header TCP (6) payload length: 32) 2001:41d0:fe0b:8000:9a64:ff80:35b8:7d03.60060 > 2a04:4e42:9::223.443: Flags [.], cksum 0xa717 (incorrect -> 0x32e8), seq 202, ack 3789, win 278, options [nop,nop,TS val 4154219679 ecr 1667233850], length 0 05:44:53.655515 IP6 (flowlabel 0xc542a, hlim 64, next-header TCP (6) payload length: 158) 2001:41d0:fe0b:8000:9a64:ff80:35b8:7d03.60060 > 2a04:4e42:9::223.443: Flags [P.], cksum 0xa795 (incorrect -> 0xddaf), seq 202:328, ack 3789, win 278, options [nop,nop,TS val 4154219680 ecr 1667233850], length 126 05:44:53.710193 IP6 (flowlabel 0x2dd03, hlim 57, next-header TCP (6) payload length: 258) 2a04:4e42:9::223.443 > 2001:41d0:fe0b:8000:9a64:ff80:35b8:7d03.60060: Flags [P.], cksum 0x550b (correct), seq 3789:4015, ack 328, win 56, options [nop,nop,TS val 1667233864 ecr 4154219680], length 226 05:44:53.750616 IP6 (flowlabel 0xc542a, hlim 64, next-header TCP (6) payload length: 32) 2001:41d0:fe0b:8000:9a64:ff80:35b8:7d03.60060 > 2a04:4e42:9::223.443: Flags [.], cksum 0xa717 (incorrect -> 0x3104), seq 328, ack 4015, win 299, options [nop,nop,TS val 4154219776 ecr 1667233864], length 0 11 packets captured 11 packets received by filter 0 packets dropped by kernel