On Mon, 2 Jul 2001, Andre Grosse Bley wrote:
> Hello "Hackers",
>
> i think the tcp code in 4.3-RELEASE (and at least stable from last week) has
> a serious bug in tcp handling:
>
> I use "LPRng 3.6.20" and openssh on the 4.3 box, lpd-server is on a 4.1 box.
> Issuing 4-5 lpq's in a minute gives "Connection timed out".
> First i thought it may be a problem with LPRng, but scp'ing large files
> doesnt work anymore, too. Even ssh hangs sometimes.
> I tried to disable the "newreno" stuff with sysctl, didnt change anything.
> Why i suspect a tcp problem?
Your description isn't exactly clear, but your problem may be fixed by
applying the patch and following the directions in my recently posted
message "Re: select fails to return incoming connect on FreeBSD-4.3" - see
the freebsd-net archives.
Note that the patch addresses _only_ problems with connections
being established to the same host / port in a quick hurry. There are no
known problems with connections terminating once a connection is
established. I'm unable to ascertain which possibility you're describing
when you say that scp transfers fail.
If you're having trouble at the connection setup stage, apply the patch
and flip the sysctl. Then see if it fixes your problem and get back to
me.
Thanks,
Mike "Silby" Silbersack
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