Date: Thu, 24 Apr 2008 20:51:29 +0200 From: Ulrich Spoerlein <uspoerlein@gmail.com> To: John Baldwin <jhb@freebsd.org> Cc: Poul-Henning Kamp <phk@phk.freebsd.dk>, freebsd-current@freebsd.org Subject: Re: [RFC] Automated generation of /etc/resolv.conf from the rc.d script Message-ID: <20080424185129.GC1672@roadrunner.spoerlein.net> In-Reply-To: <200804240821.40601.jhb@freebsd.org> References: <dEZnki0Fi32EvMrDEnqcgDeNQSc@Bbw9J2Iynx0QjNoWuQ4YSitYS3A> <MIKiw94aov2StL37zxYPU2cwfyE@NKorCT8tqQREs5VbYbldlgOz9%2B8> <RlIwVx1VnA2Q57cUUvUPn30sch4@BBB3ZKOzjjN0cxeKaWhgH87x7VY> <200804240821.40601.jhb@freebsd.org>
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On Thu, 24.04.2008 at 08:21:40 -0400, John Baldwin wrote: > On Monday 14 April 2008 11:44:13 am Eygene Ryabinkin wrote: > > At last, I did the needed modifications: patches against 7.0 from > > yesterday, April 13th, are attached. The first one enables the > > creation of /etc/resolv.conf from rc.conf variables and the second > > brings the named forwarders rewriting using values obtained via > > DHCP. I had touched dhclient-script, but it was really needed, > > because it is not good to have simular functionality in /etc/rc.d/resolv > > and in the dhclient-script. > > > > I decided not to cope with modifications of /etc/namedb/named.conf, > > but rather to create other file, /etc/namedb/named.forwarders.conf, > > that should be included from the main configuration. > > > > I am living for two days with this configuration (DHCP + local named > > instance) and no problems were spotted yet. > > > > Testing and feedback are more than welcome. > > You can already override the domain name and DNS servers (including either > overriding, providing a default, or prepending or appending to the list) via > setings in /etc/dhclient.conf, so I don't think new rc.conf variables for > that would be warranted. Updating named.conf to forward is a neat idea. > Howver, on my laptop on HEAD I've ended up just running nscd instead of a > local DNS server and doing a 'nscd -I hosts' when I get a new lease to flush > the host cache. When I get to my laptop I'll post my bits of > dhclient-exit-hooks and dhclient.conf to make this work. People always forget, that a computer can get an IP address via ppp(8), too. That's why I'm (still) running a local bind and have hooks to update the forwarders + reload in dhclient-enter-hooks *AND* ppp.linkup. I'd say that nscd(8) is the way to go for 7.0 and up (though I still haven't set it up for myself ....) Cheers, Ulrich Spoerlein -- It is better to remain silent and be thought a fool, than to speak, and remove all doubt.
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