rendered paste body$ sudo tcpdump -vvvenX -s0 'host dev.openwrt.org'
tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
10:44:56.705147 00:14:22:14:70:d8 > 00:1a:e3:e7:e8:44, ethertype IPv4 (0x0800), length 74: (tos 0x0, ttl 64, id 35872, offset 0, flags [DF], proto: TCP (6), length: 60) 172.16.10.24.45852 > 195.56.146.238.443: S, cksum 0xec36 (correct), 2713262445:2713262445(0) win 5840 <mss 1460,sackOK,timestamp 861967693 0,nop,wscale 5>
0x0000: 4500 003c 8c20 4000 4006 a24c ac10 0a18 E..<..@.@..L....
0x0010: c338 92ee b31c 01bb a1b9 196d 0000 0000 .8.........m....
0x0020: a002 16d0 ec36 0000 0204 05b4 0402 080a .....6..........
0x0030: 3360 954d 0000 0000 0103 0305 3`.M........
10:44:56.868284 00:1a:e3:e7:e8:44 > 00:14:22:14:70:d8, ethertype IPv4 (0x0800), length 74: (tos 0x0, ttl 45, id 0, offset 0, flags [DF], proto: TCP (6), length: 60) 195.56.146.238.443 > 172.16.10.24.45852: S, cksum 0x7e32 (correct), 3421857751:3421857751(0) ack 2713262446 win 5792 <mss 1380,sackOK,timestamp 1685509677 861967693,nop,wscale 7>
0x0000: 4500 003c 0000 4000 2d06 416d c338 92ee E..<..@.-.Am.8..
0x0010: ac10 0a18 01bb b31c cbf5 67d7 a1b9 196e ..........g....n
0x0020: a012 16a0 7e32 0000 0204 0564 0402 080a ....~2.....d....
0x0030: 6476 d62d 3360 954d 0103 0307 dv.-3`.M....
10:44:56.868308 00:14:22:14:70:d8 > 00:1a:e3:e7:e8:44, ethertype IPv4 (0x0800), length 66: (tos 0x0, ttl 64, id 35873, offset 0, flags [DF], proto: TCP (6), length: 52) 172.16.10.24.45852 > 195.56.146.238.443: ., cksum 0xc287 (correct), 1:1(0) ack 1 win 183 <nop,nop,timestamp 861967709 1685509677>
0x0000: 4500 0034 8c21 4000 4006 a253 ac10 0a18 E..4.!@.@..S....
0x0010: c338 92ee b31c 01bb a1b9 196e cbf5 67d8 .8.........n..g.
0x0020: 8010 00b7 c287 0000 0101 080a 3360 955d ............3`.]
0x0030: 6476 d62d dv.-
10:44:56.868763 00:14:22:14:70:d8 > 00:1a:e3:e7:e8:44, ethertype IPv4 (0x0800), length 184: (tos 0x0, ttl 64, id 35874, offset 0, flags [DF], proto: TCP (6), length: 170) 172.16.10.24.45852 > 195.56.146.238.443: P, cksum 0x0cec (incorrect (-> 0x5a34), 1:119(118) ack 1 win 183 <nop,nop,timestamp 861967710 1685509677>
0x0000: 4500 00aa 8c22 4000 4006 a1dc ac10 0a18 E...."@.@.......
0x0010: c338 92ee b31c 01bb a1b9 196e cbf5 67d8 .8.........n..g.
0x0020: 8018 00b7 0cec 0000 0101 080a 3360 955e ............3`.^
0x0030: 6476 d62d 8074 0103 0100 4b00 0000 2000 dv.-.t....K.....
0x0040: 0039 0000 3800 0035 0000 1600 0013 0000 .9..8..5........
0x0050: 0a07 00c0 0000 3300 0032 0000 2f03 0080 ......3..2../...
0x0060: 0000 0500 0004 0100 8000 0015 0000 1200 ................
0x0070: 0009 0600 4000 0014 0000 1100 0008 0000 ....@...........
0x0080: 0604 0080 0000 0302 0080 9708 45e3 1419 ............E...
0x0090: 7b71 fd41 df47 b0a1 b99d 9fa8 2564 d364 {q.A.G......%d.d
0x00a0: 2843 9ec6 b02d 12cc ef64 (C...-...d
10:44:57.033416 00:1a:e3:e7:e8:44 > 00:14:22:14:70:d8, ethertype IPv4 (0x0800), length 66: (tos 0x0, ttl 45, id 61997, offset 0, flags [DF], proto: TCP (6), length: 52) 195.56.146.238.443 > 172.16.10.24.45852: ., cksum 0xc270 (correct), 1:1(0) ack 119 win 46 <nop,nop,timestamp 1685509718 861967710>
0x0000: 4500 0034 f22d 4000 2d06 4f47 c338 92ee E..4.-@.-.OG.8..
0x0010: ac10 0a18 01bb b31c cbf5 67d8 a1b9 19e4 ..........g.....
0x0020: 8010 002e c270 0000 0101 080a 6476 d656 .....p......dv.V
0x0030: 3360 955e 3`.^
10:44:57.042660 00:1a:e3:e7:e8:44 > 00:14:22:14:70:d8, ethertype IPv4 (0x0800), length 66: (tos 0x0, ttl 45, id 61998, offset 0, flags [none], proto: TCP (6), length: 52) 195.56.146.238.443 > 172.16.10.24.45852: R, cksum 0x2a0e (correct), 3421857752:3421857752(0) win 0 <nop,nop,timestamp 1685509719 0>
0x0000: 4500 0034 f22e 0000 2d06 8f46 c338 92ee E..4....-..F.8..
0x0010: ac10 0a18 01bb b31c cbf5 67d8 b62b 66cc ..........g..+f.
0x0020: 8004 0000 2a0e 0000 0101 080a 6476 d657 ....*.......dv.W
0x0030: 0000 0000 ....