Date: Thu, 08 May 2003 17:23:45 +0200 From: "Ian Freislich" <ianf@za.uu.net> To: Lars =?iso-8859-1?Q?K=F6ller?= <Lars.Koeller@Uni-Bielefeld.DE> Cc: freebsd-questions@freebsd.org Subject: Re: Please, Urgent: Need ideas/help to solve PR bin/51586 Message-ID: <48420.1052407425@wcom.com> In-Reply-To: Your message of "Thu, 08 May 2003 16:48:24 %2B0200." <200305081448.h48EmO628174@rayadm.hrz.uni-bielefeld.de> References: <200305081448.h48EmO628174@rayadm.hrz.uni-bielefeld.de>
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Lars =?iso-8859-1?Q?K=F6ller?= wrote: > > -anf inet |grep -v TIME_WAIT' on machine2 after you get the timeout > > connecting to machine2? Is the tcp *.514 LISTEN line missing after > > No, as you can see above. It's possibe to connect from a third machine > to machine2 during the timeout/hang. Hmm, I can't seem to reproduce the inetd service termination any more so that may be a red herring. > > you get the timeout. What do you get in your messages file on > > machine2 (the one running the rsh server)? I suspect that you're > > rshd[83865]: connect second port 927: Operation timed out That is definitely different to what I get, so I guess there is quite a difference between 4.8-STABLE Sun Apr 27 and 4.8-RELEASE in the networking code. I've traced where it fails in the -STABLE code - line 123 of /usr/src/lib/libc/rpc/bindresvport.c (rev 1.12). It's a bind with sin_addr=INADDR_ANY and ports in IP_PORTRANGE_LOW. The kernel "Can't assign requested address" because it probably thinks none are available they're all in TIME_WAIT. Not that that helps you very much. Perhaps -STABLE is slightly better because you get an immediate fail when there are "no" ports and it starts working again when there are. Also if you set net.inet.tcp.msl=300, the connections leave TIME_WAIT a lot sooner and where it would die after about 30 seconds, I haven't yet seen had a failure after several minutes. Ian
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