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further reply-to strangeness



As I mentioned on the list a few days ago I have been having some trouble with reply-to. In particular it seems to be generating a bad tc checksum for the return packet. Since then I have rebuilt kernel and world to source checked out this morning (3/31) and it seems to properly return route pings, but still fails on the TCP with bad checksums. I have put a more full TCP packet trace from the client machine below in case it sparks something in anyone.

Thank you for any help.

-David Powers

17:53:16.652413 xxx.xxx.xxx.xxx.port > yyy.yyy.yyy.yyy.ssh: S [tcp sum ok] 1807604332:1807604332(0) win 57344 <mss 1460,nop,wscale 0,nop,nop,timestamp 2018840 0> (DF) (ttl 64, id 26021, len 60)
0x0000	 4500 003c 65a5 4000 4006 84ab cf63 7353	E..<e.@.@....csS
0x0010	 d8e0 34d4 0a2a 0016 6bbd da6c 0000 0000	..4..*..k..l....
0x0020	 a002 e000 fbfa 0000 0204 05b4 0103 0300	................
0x0030	 0101 080a 001e ce18 0000 0000          	............
17:53:16.677889 yyy.yyy.yyy.yyy.ssh > xxx.xxx.xxx.xxx.port: S [bad tcp cksum 53a0!] 3475201839:3475201839(0) ack 1807604333 win 17376 <mss 1460,nop,wscale 0,nop,nop,timestamp 21658571 2018840> (DF) (ttl 58, id 42684, len 60)
0x0000	 4500 003c a6bc 4000 3a06 4994 d8e0 34d4	E..<..@.:.I...4.
0x0010	 cf63 7353 0016 0a2a cf23 5ae3 6bbd da6d	.csS...*.#Z.k..m
0x0020	 a012 43e0 509a 0000 0204 05b4 0103 0300	..C.P...........
0x0030	 0101 080a 014a 7bcb 001e ce18          	.....J{.....
17:53:19.645037 xxx.xxx.xxx.xxx.port > yyy.yyy.yyy.yyy.ssh: S [tcp sum ok] 1807604332:1807604332(0) win 57344 <mss 1460,nop,wscale 0,nop,nop,timestamp 2019140 0> (DF) (ttl 64, id 57581, len 60)
0x0000	 4500 003c e0ed 4000 4006 0963 cf63 7353	E..<..@.@..c.csS
0x0010	 d8e0 34d4 0a2a 0016 6bbd da6c 0000 0000	..4..*..k..l....
0x0020	 a002 e000 face 0000 0204 05b4 0103 0300	................
0x0030	 0101 080a 001e cf44 0000 0000          	.......D....
17:53:19.670317 yyy.yyy.yyy.yyy.ssh > xxx.xxx.xxx.xxx.port: S [bad tcp cksum 219f!] 3475201839:3475201839(0) ack 1807604333 win 17376 <mss 1460,nop,wscale 0,nop,nop,timestamp 21658577 2019140> (DF) (ttl 58, id 65290, len 60)
0x0000	 4500 003c ff0a 4000 3a06 f145 d8e0 34d4	E..<..@.:..E..4.
0x0010	 cf63 7353 0016 0a2a cf23 5ae3 6bbd da6d	.csS...*.#Z.k..m
0x0020	 a012 43e0 509a 0000 0204 05b4 0103 0300	..C.P...........
0x0030	 0101 080a 014a 7bd1 001e cf44          	.....J{....D
17:53:22.845106 xxx.xxx.xxx.xxx.port > yyy.yyy.yyy.yyy.ssh: S [tcp sum ok] 1807604332:1807604332(0) win 57344 <mss 1460,nop,wscale 0,nop,nop,timestamp 2019460 0> (DF) (ttl 64, id 21241, len 60)
0x0000	 4500 003c 52f9 4000 4006 9757 cf63 7353	E..<R.@.@..W.csS
0x0010	 d8e0 34d4 0a2a 0016 6bbd da6c 0000 0000	..4..*..k..l....
0x0020	 a002 e000 f98e 0000 0204 05b4 0103 0300	................
0x0030	 0101 080a 001e d084 0000 0000          	............
17:53:23.497186 yyy.yyy.yyy.yyy.ssh > xxx.xxx.xxx.xxx.port: S [bad tcp cksum d99d!] 3475201839:3475201839(0) ack 1807604333 win 17376 <mss 1460,nop,wscale 0,nop,nop,timestamp 21658585 2019460> (DF) (ttl 58, id 63080, len 60)
0x0000	 4500 003c f668 4000 3a06 f9e7 d8e0 34d4	E..<.h@.:.....4.
0x0010	 cf63 7353 0016 0a2a cf23 5ae3 6bbd da6d	.csS...*.#Z.k..m
0x0020	 a012 43e0 509a 0000 0204 05b4 0103 0300	..C.P...........
0x0030	 0101 080a 014a 7bd9 001e d084          	.....J{.....
17:53:26.045343 xxx.xxx.xxx.xxx.port > yyy.yyy.yyy.yyy.ssh: S [tcp sum ok] 1807604332:1807604332(0) win 57344 <mss 1460> (DF) (ttl 64, id 35829, len 44)
0x0000	 4500 002c 8bf5 4000 4006 5e6b cf63 7353	E..,..@.@.^k.csS
0x0010	 d8e0 34d4 0a2a 0016 6bbd da6c 0000 0000	..4..*..k..l....
0x0020	 6002 e000 1750 0000 0204 05b4          	`....P......
17:53:26.074621 yyy.yyy.yyy.yyy.ssh > xxx.xxx.xxx.xxx.port: S [bad tcp cksum d49d!] 3475201839:3475201839(0) ack 1807604333 win 17376 <mss 1460,nop,wscale 0,nop,nop,timestamp 21658590 2019460> (DF) (ttl 58, id 49424, len 60)
0x0000	 4500 003c c110 4000 3a06 2f40 d8e0 34d4	E..<..@.:./@..4.
0x0010	 cf63 7353 0016 0a2a cf23 5ae3 6bbd da6d	.csS...*.#Z.k..m
0x0020	 a012 43e0 509a 0000 0204 05b4 0103 0300	..C.P...........
0x0030	 0101 080a 014a 7bde 001e d084          	.....J{.....
17:53:29.245529 xxx.xxx.xxx.xxx.port > yyy.yyy.yyy.yyy.ssh: S [tcp sum ok] 1807604332:1807604332(0) win 57344 <mss 1460> (DF) (ttl 64, id 12758, len 44)
0x0000	 4500 002c 31d6 4000 4006 b88a cf63 7353	E..,1.@.@....csS
0x0010	 d8e0 34d4 0a2a 0016 6bbd da6c 0000 0000	..4..*..k..l....
0x0020	 6002 e000 1750 0000 0204 05b4          	`....P......
17:53:29.270544 yyy.yyy.yyy.yyy.ssh > xxx.xxx.xxx.xxx.port: S [bad tcp cksum ce9d!] 3475201839:3475201839(0) ack 1807604333 win 17376 <mss 1460,nop,wscale 0,nop,nop,timestamp 21658596 2019460> (DF) (ttl 58, id 48140, len 60)
0x0000	 4500 003c bc0c 4000 3a06 3444 d8e0 34d4	E..<..@.:.4D..4.
0x0010	 cf63 7353 0016 0a2a cf23 5ae3 6bbd da6d	.csS...*.#Z.k..m
0x0020	 a012 43e0 509a 0000 0204 05b4 0103 0300	..C.P...........
0x0030	 0101 080a 014a 7be4 001e d084          	.....J{.....
17:53:32.445757 xxx.xxx.xxx.xxx.port > yyy.yyy.yyy.yyy.ssh: S [tcp sum ok] 1807604332:1807604332(0) win 57344 <mss 1460> (DF) (ttl 64, id 17569, len 44)
0x0000	 4500 002c 44a1 4000 4006 a5bf cf63 7353	E..,D.@.@....csS
0x0010	 d8e0 34d4 0a2a 0016 6bbd da6c 0000 0000	..4..*..k..l....
0x0020	 6002 e000 1750 0000 0204 05b4          	`....P......
17:53:32.470924 yyy.yyy.yyy.yyy.ssh > xxx.xxx.xxx.xxx.port: S [bad tcp cksum c79d!] 3475201839:3475201839(0) ack 1807604333 win 17376 <mss 1460,nop,wscale 0,nop,nop,timestamp 21658603 2019460> (DF) (ttl 58, id 63513, len 60)
0x0000	 4500 003c f819 4000 3a06 f836 d8e0 34d4	E..<..@.:..6..4.
0x0010	 cf63 7353 0016 0a2a cf23 5ae3 6bbd da6d	.csS...*.#Z.k..m
0x0020	 a012 43e0 509a 0000 0204 05b4 0103 0300	..C.P...........
0x0030	 0101 080a 014a 7beb 001e d084          	.....J{.....
17:53:38.466438 yyy.yyy.yyy.yyy.ssh > xxx.xxx.xxx.xxx.port: S [bad tcp cksum bb9d!] 3475201839:3475201839(0) ack 1807604333 win 17376 <mss 1460,nop,wscale 0,nop,nop,timestamp 21658615 2019460> (DF) (ttl 58, id 51827, len 60)
0x0000	 4500 003c ca73 4000 3a06 25dd d8e0 34d4	E..<.s@.:.%...4.
0x0010	 cf63 7353 0016 0a2a cf23 5ae3 6bbd da6d	.csS...*.#Z.k..m
0x0020	 a012 43e0 509a 0000 0204 05b4 0103 0300	..C.P...........
0x0030	 0101 080a 014a 7bf7 001e d084          	.....J{.....
17:53:38.646117 xxx.xxx.xxx.xxx.port > yyy.yyy.yyy.yyy.ssh: S [tcp sum ok] 1807604332:1807604332(0) win 57344 <mss 1460> (DF) (ttl 64, id 58332, len 44)
0x0000	 4500 002c e3dc 4000 4006 0684 cf63 7353	E..,..@.@....csS
0x0010	 d8e0 34d4 0a2a 0016 6bbd da6c 0000 0000	..4..*..k..l....
0x0020	 6002 e000 1750 0000 0204 05b4          	`....P......
17:53:38.670929 yyy.yyy.yyy.yyy.ssh > xxx.xxx.xxx.xxx.port: S [bad tcp cksum bb9d!] 3475201839:3475201839(0) ack 1807604333 win 17376 <mss 1460,nop,wscale 0,nop,nop,timestamp 21658615 2019460> (DF) (ttl 58, id 44829, len 60)
0x0000	 4500 003c af1d 4000 3a06 4133 d8e0 34d4	E..<..@.:.A3..4.
0x0010	 cf63 7353 0016 0a2a cf23 5ae3 6bbd da6d	.csS...*.#Z.k..m
0x0020	 a012 43e0 509a 0000 0204 05b4 0103 0300	..C.P...........
0x0030	 0101 080a 014a 7bf7 001e d084          	.....J{.....