Date: Wed, 9 May 2007 13:22:17 +0100 From: RW <fbsd06@mlists.homeunix.com> To: freebsd-questions@freebsd.org Subject: Re: ip refresh, resolv.conf and local scripts on startup? Message-ID: <20070509132217.010c71af@gumby.homeunix.com.> In-Reply-To: <dedb607c0705081411i287cd4e6ue8f9dd8afc5753a8@mail.gmail.com> References: <dedb607c0705081411i287cd4e6ue8f9dd8afc5753a8@mail.gmail.com>
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On Tue, 8 May 2007 16:11:21 -0500 "Jack Barnett" <jackbarnett@gmail.com> wrote: > I have a script that updates some dynamic DNS records (can be run as > non-root if needed). > > It needs to be run on startup - after network is configured and after > rc.firewall (it'll get blocked if it's run before the firewall is > setup). > > What is a good place to put this? I could put it at the end of > rc.firewall, but is there a better place to put it? This is a problem that people see when they need to update a local dhcp server on a machine that gets its own settings by dhcp. Try google. > Also how do I refresh a dynamic IP without rebooting? > > Sometimes my cable modem gets messed up and under windows I just do: > ipconfig /release > ipconfig /renew > > and it gets new IP and sets everything up. In FreeBSD is there a way > to reconfigure everything without rebooting? /etc/rc.d/dhclient restart should do it > (rc.firewall uses this to get network info: > onet=`ifconfig xl0 | grep "inet " | awk '{print $6}'` > oip=`ifconfig xl0 | grep "inet " | awk '{print $2}'` > Meaning, rc.firewall would also have to be re-ran if the IP is new). > [also to make things more complicated, I think I need a rule in > rc.firewallto allow for DHCP clients to go out? It gets blocked on > external interface > when firewall comes up??] I doesn't appear to matter, I think dhclient bypasses the firewall. at least that's my experience with PF. > Also how do I override /etc/resolv.conf? DHCP client configures it I > think and sets it up to point to my ISP DNS servers (which suck) and > would like to give it mine instead of there, but it keeps getting > over written on startup when it gets a DHCP lease? See dhclient.conf(5) for how to control what DHCP does to resolv.conf,
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