Date: Sun, 03 Aug 2003 16:16:55 -0700 From: Daniel Rudy <dcrudy@pacbell.net> To: "David S. Jackson" <deepbsd@earthlink.net> Cc: freebsd-questions@freebsd.org Subject: Re: Finding your dynamic external IP Message-ID: <3F2D97E7.3020802@pacbell.net> In-Reply-To: <20030803221318.GA13418@sylvester.dsj.net> References: <20030803221318.GA13418@sylvester.dsj.net>
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Somewhere around the time of 08/03/2003 15:13, the world stopped and
listened as David S. Jackson spoke these words of wisdom...:
> If your external IP number changes, as with DHCP, is there a way
> to find out what it currently is? I was thinking you could keep
> BitchX logged into a chat channel and script a /dns yournick and
> email yourself the results from time to time.
>
> How would you do it?
>
If you know what interface you are running on, then you can do this to
get the IP address:
ifconfig <interface> | head -2 | tail -1 | awk '{print $2}'
to get the IP address. Then if you want to mail it to yourself, then
you can do the following:
/usr/bin/printf "Current IP address: `ifconfig <interface> | head -2 |
tail -1 | awk '{print $2}'`\n" | /usr/bin/mail -s "IP Address
Assignment" root &
To update your Dynamic DNS, use the following:
ddclient -use=if -if=<interface>
This will run ddclient in daemon mode so that anytime the IP address
changes on <interface> it will update the DDNS provider's servers.
--
Daniel Rudy
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