ip refresh, resolv.conf and local scripts on startup?

[Jack Barnett]

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 at 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 at 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.
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> >
>
>