Date: Wed, 9 May 2007 02:24:08 -0500 From: "Jack Barnett" <jackbarnett@gmail.com> To: "User Iam" <vramnum10@gmail.com>, freebsd-questions@freebsd.org Subject: Re: ip refresh, resolv.conf and local scripts on startup? Message-ID: <dedb607c0705090024g784e5591y8610b16793422ac8@mail.gmail.com> In-Reply-To: <727fc2ee0705081819o1177a702u490b9ef24c7c9b02@mail.gmail.com> References: <dedb607c0705081411i287cd4e6ue8f9dd8afc5753a8@mail.gmail.com> <727fc2ee0705081819o1177a702u490b9ef24c7c9b02@mail.gmail.com>
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hrm, thanks, but this doesn't seem to work:
`ifconfig xl0 down` doesn't do anything... executes without error, but the
interface stays up.
`/sbin/dhclient` gets a new IP, but doesn't "re-do" the firewall with new
IP, so everything is broken.
echo nameserver 123.34.45.67 > /etc/resolv.conf
echo nameserver 321.23.67.328 >> /etc/resolv.conf
This is over written on startup/reboot by the dhcpclient. If I modify the
file, then it tries to "correct" it self and over writes the file with the
DNS servers provided via the DHCP server.
Any other ideas?
Thanks,
Jack
On 5/8/07, User Iam <vramnum10@gmail.com> wrote:
>
> Hi
>
> To get a new ip
>
> Do
>
> /sbin/ifconfig ethX <use correct number> down
>
> /sbin/dhclient # to get a new ip..
>
>
> Then for resolv.conf
>
>
> echo nameserver 123.34.45.67 > /etc/resolv.conf
> echo nameserver 321.23.67.328 >> /etc/resolv.conf
>
>
> HTH
>
> User Iam
>
>
> On 5/8/07, 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?
> >
> > 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?
> >
> > (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??]
> >
> > 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?
> >
> > thanks.
> > _______________________________________________
> > freebsd-questions@freebsd.org mailing list
> > http://lists.freebsd.org/mailman/listinfo/freebsd-questions
> > To unsubscribe, send any mail to "
> > freebsd-questions-unsubscribe@freebsd.org"
> >
>
>
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