Re: "Greased TCPenguin"

Richard Gooch (rgooch@atnf.CSIRO.AU)
Tue, 24 Mar 1998 23:29:12 +1100

David S. Miller writes:
>
> Linus has a pre91 patch up on linux.kernel.org in the testing
> directory. I highly suggest people check it out, all my latest TCP
> stuff is in there, and specifically:

Something still not right:

TCPv4 bad checksum from 130.155.198.47:03ff to 130.155.191.26:03fd, len=32/32/52
TCPv4 bad checksum from 130.155.198.47:03ff to 130.155.191.26:03fd, len=32/32/52
TCPv4 bad checksum from 130.155.198.47:0448 to 130.155.191.26:1770, len=32/32/52
TCPv4 bad checksum from 130.155.198.47:0201 to 130.155.191.26:03ff, len=20/20/4

The two machines in question are running 2.1.91-pre1 SMP. One is on a
departmental LAN (with lots of hubs, switches and a FDDI backbone),
the other is on a home LAN. The two LANs are connected via CSLIP (33.6
kBaud).
If it happens again I'll try to get a tcpdump.

Regards,

Richard....

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