Date: Sun, 14 Dec 2008 14:02:34 +0100 From: Roger Olofsson <240olofsson@telia.com> Cc: User Questions <freebsd-questions@freebsd.org> Subject: Re: Canonical way for DHCP->IP->/etc/hosts Message-ID: <494503EA.4060505@telia.com> In-Reply-To: <4945035C.6040401@telia.com> References: <4945035C.6040401@telia.com>
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Roger Olofsson skrev: > Dear mailing list, > > I am sorry if this question has been asked over and over again - however > the htdig search interface for the lists is somewhat shaky and gives > referrer errors for me. > > Pre-conditions. > Dualhomed firewalled FreeBSD7.1. One nic is LAN and the other dynamical > IP from ISP. > > Question: What is the canonical way for catching the IP address from a > DHCP assigned nic (from ISP that doesn't set hostname) and put the IP > into /etc/hosts with a hostname? > > Reason for asking > Firewall rules needs refreshing after new IP > > Possible answers: > Create dhcp-exit-hooks (undocumented?) in /etc like so: > > #!/bin/sh > > if [ ! -z "$new_ip_address" ]; then > IP=`ifconfig WAN | grep 'inet' | grep -v 'inet6' | cut -f 2 -d ' '` > if [ ! -z "$IP" ]; then > echo "$IP wan.local.domain wan" >> /etc/hosts > > <refresh firewall rules here> > > fi > fi > > _______________________________________________ > 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" > > > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - http://www.avg.com > Version: 8.0.176 / Virus Database: 270.9.17/1847 - Release Date: 2008-12-13 16:56 > Sorry I mean dhclient-exit-hooks not dhcp-exit-hooks.... /R
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