Re: What does XP do with lease for shutdown/restart?

In article <qk4l74xsbp.ln2@xxxxxxxxxxxxxxxxxxxx>,
baloo@xxxxxxxxx says...

Peabody wrote:

I have two computers connected to my NAT router - a
desktop running MCE2005 connected by wire, and a laptop
running Home connected wirelessly.

It appears that the lease each computer obtains from
the router survives the powering down of all three
devices plus the cablemodem. So I would like to know
what, if anything, XP does in the shutdown or restart
process with respect to open leases, and more generally
what it does with respect to the whole network
connection.

From what I've seen of Windows behavior, Windows does
not handle DHCP properly at shutdown or when disabling
interfaces. ipconfig /release and equivalents in other
variants of windows does not actually send a release to
the DHCP server. Nothing that you can do will make
Windows release a DHCP address as far as DHCP servers
are concerned. If you have a lot of Windows systems on
your network, I strongly recommend using relatively
short lease times to work around this problem.

Well the problem here is that the DHCP server I'm dealing
with is the one in my wireless router. It's clear that
either the computer or the router is saving the old lease
info through a power-down, and then they just set up the
same lease when powered up. What I want them to do is start
over with a new lease when powered up, which is what always
happened with a direct connection to Cox without the router.

If I fix the connections to specific local IP numbers, so
that DHCP is no longer involved, do leases just go away?
Maybe that would fix it.

Thanks for the response.

.

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