.sv Files

Tue Nov 28 08:28:34 PST 2006

Dhcpcd will overwrite certain files, keeping the old
file as a .sv file, replacing the overwritten file with the original
on the way out when it is killed.

I have been having problems with mysteriously disappearing
resolv.conf and ntp.conf files that are a result of this.  In
Slackware, this his can be avoided by editing
/etc.rc.d/rc.inet1.conf and adding lines like:

rc.inet1.conf:DHCP_KEEPNTP[0]="yes"          # If you don't want ntp.conf overwritten

where "[0]" is your interface number, ie 0 for eth0...

In general, forcing a new lease would look something like this:

#!/usr/bin/bash
/sbin/dhcpcd -k # kill dhcpcd and flush the lease
/usr/bin/sleep 1
/sbin/dhcpcd -d -t 60 -N -h `hostname` 
# -d is for verbose logging, -t sets time out in seconds -N
# preserves ntpd.conf and -h `hostname` sets the hostname in DNS on
# the dhcp server.

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