*BSD News Article 77948


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From: Neil Fowler Wright <neil@corpex.com>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: bind problems and installation
Date: Tue, 10 Sep 1996 13:04:59 +0100
Organization: Corpex Limited
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Message-ID: <3235596B.41C67EA6@corpex.com>
References: <322E9CAF.41C67EA6@corpex.com> <Dx9vy7.IMp@ora.de>
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To: Christoph Badura <bad@ora.de>

Christoph Badura wrote:
> 
> In <322E9CAF.41C67EA6@corpex.com> Neil <neil@corpex.com> writes:
> >However I thought I'd ask whether FreeBSD bind suffered the same failure
> >as Sun bind.  When ifconfig is used to allocate multiple IP's to the
> >same machine, bind will not restart if there are more than 64 IP's
> >allocated.  Hence to restart bind, the machine must be restarted.
> 
> Currently, BIND has this problem on all machines.  This is because it binds
> a socket to the address of every running interface of the machine.  Each of
> these sockets uses up a file descriptor.  The limit on open file descriptors
> is 64/256 on SunOS.  I believe it is higher by default on FreeBSD.

I have finally compiled and installed bind 4.9.4 but it does die
at 64 ifconfig aliases.

> In anycase you could raise the limit for bind.

Can you explain how to do this.. I asume it's a simple edit to one of
the include files.

Cheers,

Neil