[Pkg-sysvinit-devel] bootclean, /sbin/ifup, and dhclient leases file

[Sean Shapira]

I've added a line to my bootclean script:

         find . ! -xtype d ! -name utmp ! -name innd.pid \
+               ! -name dhclient.eth0.leases \
                 -print0 | xargs -0r rm -f -- \
                 || { report_err ; return 1 ; }

to preserve the dhclient leases file.  (It seems /sbin/ifup puts this in 
/var/run.)  Yet if it is deleted, dhclient will send a DHCPDISCOVER 
message, and my DHCP server will respond with a DHCPOFFER of a different 
IP address.  This is messy.  Preserving the leases file makes dhclient 
send a DHCPREQUEST for the previously assigned IP address, and in most 
cases the DHCP server will grant the request.

I guess I'm confused:  doesn't everyone want their dhcp leases file to 
persist between system reboots?

-- 
Sean Shapira    sds at jazzie.com