Date: Sat, 01 Jul 2000 11:47:06 +1200 From: Mark Ibell <marki@paradise.net.nz> To: "Sean O'Connell" <sean@stat.Duke.EDU>, freebsd-bugs@freebsd.org, freebsd-stable@freebsd.org Subject: Re: telnet/tcp problems in 4.0-RELEASE Message-ID: <395D317A.D56E2AC@paradise.net.nz> References: <395C9767.3CB72C03@paradise.net.nz> <20000630094706.F48683@stat.Duke.EDU>
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Sean O'Connell wrote: > > Mark Ibell stated: > : Hi, > : > : We have a FreeBSD 4.0-RELEASE (GENERIC kernel) box at work that has > : exhibitted some strange telnetd behaviour. For example, when you try to > : telnet in you get a login prompt straight away but after entering a > : password have to wait for exactly 150 seconds (2m30s) until the shell > : prompt is reached. > : > : Even more curiously, once logged in if you try to telnet (or ftp for > : that matter) out, a 75 second delay is experienced. This has happened a > : couple of times now and a reboot fixes the problem. DNS has been checked > : carefully (nslookup queries work fine), so I'm pretty sure it's not > : that. > : > : I've seen a couple of vague references to this problem but nothing quite > : so clearly defined. There is no problem on boot, so I can only guess the > : system gets itself into a state over time. > : > : Guess I'd better upgrade to 4.0-STABLE... > > Yep. Going to stable is a good idea. If you aren't using IPv6, > you might want to pull that out of your kernel config > > #option INET6 > #pseudo-device gif > #pseudo-device faith > > there were some issues with gethostbyname and ip4to6 in RELEASE. hmmm - I might try that. > > This sounds like a dns problem though. Do reverse look ups > work? Telnet usually does a forward and a reverse lookup. Also, > make sure that this isn't an autonegotiation (speed and duplex) error > on the NIC. yep - forward and reverse lookups work for all machines involved. I don't think that it's a NIC negotiation problem either because ftp/http into the machine work fine. Curiously, even telnet localhost experiences the same delay! Thanks, Mark > > Good luck, > S > ----------------------------------------------------------------------- > Sean O'Connell Email: sean@stat.Duke.EDU > Institute of Statistics and Decision Sciences Phone: (919) 684-5419 > Duke University Fax: (919) 684-8594 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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