> After switching over to 2.2pre kernels, a certain FTP transfer gets stuck
> after having moved a bunch of files. The connecion gets stuck in FIN_WAIT1
> state, and tcpdump shows the following (my host is 194.100.26.178)

Oh nice. Seen that one before too Im afraid. 

> 04:30:54.471992 194.100.26.178.1483 > 194.251.244.142.20: FP 35041:36356(1315) ack 1 
>win 32120 (DF)

Data + fin (total of 1316 bytes of sequence space)

> 04:30:54.491887 194.251.244.142.20 > 194.100.26.178.1483: . ack 36356 win 8760 (DF) 
>[tos 0x8]

ftp server acks the data but not the FIN

> 04:32:54.471994 194.100.26.178.1483 > 194.251.244.142.20: FP 35041:36356(1315) ack 1 
>win 32120 (DF)

We resend

> 04:32:54.501887 194.251.244.142.20 > 194.100.26.178.1483: . ack 36356 win 8760 (DF) 
>[tos 0x8]

It ignores

> Cheops (http://www.marko.net/cheops/) reports 194.251.244.142 as being
> Solaris 2.x.

Well it appears to be broken not us. And badly broken. The only things I've
see that broken are very old DOS  boxes.

Alan

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