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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!news.mel.connect.com.au!munnari.OZ.AU!news.ecn.uoknor.edu!feed1.news.erols.com!newsfeeds.sol.net!hammer.uoregon.edu!csulb.edu!data.ramona.vix.com!nnrp1.crl.com!not-for-mail From: "Jordan K. Hubbard" <jkh@FreeBSD.org> Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: UDP problem on 2.1.6 Date: Mon, 19 May 1997 05:00:05 -0700 Organization: Walnut Creek CDROM Lines: 20 Message-ID: <338040C5.446B9B3D@FreeBSD.org> References: <337f08f8.11769829@news.wirehub.nl> NNTP-Posting-Host: time.cdrom.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 3.01 (X11; I; FreeBSD 2.2-STABLE i386) To: piet@wirehub.nl Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:41158 Piet Honkoop wrote: > For a number of servers, we use IP aliases. This worked ok for quite a while but > all of a sudden, one of our nameservers (the IP address this one is known by is > an aliased address) stopped responding. Also other services on the box (like > NFS) refused to respond. But only if we tried it on the aliased address; the > main address gave no problem! Rebooting the box didn't help. At a total loss, we > had to move the DNS away to another box (other OS) just to keep working... It's not a UDP problem, it has more to do with an odd feature(?) of named that it keeps one file descriptor open per virtual domain you have configured (the IP alias doesn't have anything _directly_ to do with it, it's just part of the same configuration details). If you want to host lots of domains this way, add something like: options "OPEN_MAX=512" To your kernel config file (see /sys/i386/conf/LINT for references). -- - Jordan Hubbard FreeBSD core team / Walnut Creek CDROM.