Re: "Greased TCPenguin"

Aaron Tiensivu (tiensivu@pilot.msu.edu)
Wed, 25 Mar 1998 19:25:06 -0500


> On Tue, 24 Mar 1998, Richard Gooch wrote:
> >Something still not right:
> >TCPv4 bad checksum from 130.155.198.47:03ff to 130.155.191.26:03fd, len=32/32
> >TCPv4 bad checksum from 130.155.198.47:03ff to 130.155.191.26:03fd, len=32/32
> >TCPv4 bad checksum from 130.155.198.47:0448 to 130.155.191.26:1770, len=32/32
> >TCPv4 bad checksum from 130.155.198.47:0201 to 130.155.191.26:03ff, len=20/20

> I read messages such us this a lot of times but I never related it to a
> possible TCP bug, I always think that the ppp/slip is a poor connection
> and can miss something (we use checksum for that cases no?).
>
> I think that also because _I_ never seen that messages over an ethernet.

Some people have noted that it might be due to VJ Compression.
I used to get those messages every once in a while under 2.0.x while running
a busy quake server on ethernet. I wrote it off as modem spoo..

But, the interesting note.. same setup, now under pre-2.1.91, I haven't
had any of these messages.

Sooo.. I think it's a bit of a toss-up.

--
Easter has been cancelled this year. They've found the body.

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