On Fri, 16 Jan 2009 21:09:28 +0000 Chris G cl@isbd.net allegedly wrote:
I think you're right though I don't *quite* understand exactly why the router did what it did. It was actually trivial to fix because the newly installed machine has two built in LAN connections, simply plugging the ethernet connection into the other one sorted everything and it got the expected address of 192.168.1.65.
As you say the machine *used* to be 192.168.1.4 and the router had remembered its MAC address and assigned it. Surely though the router should have been 'bright enough' to realise the MAC address had been re-assigned.
Sorry - I don't understand that. The only information the DHCP server had was the request and the MAC address requesting the lease. I'm not sure how you expect the router the know that that MAC address had somehow been "re-used" and now needed a new IP address.
I still can't see where in the router to tell it not to remember MAC addresses and assign the same IP addresses to them.
Keep searching. If this is a domestic grade router, then somewhere there will be an option in the DHCP configuration something like "always assign the same IP address". Simply uncheck that option.
Mick
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The text file for RFC 854 contains exactly 854 lines. Do you think there is any cosmic significance in this?
Douglas E Comer - Internetworking with TCP/IP Volume 1
http://www.ietf.org/rfc/rfc854.txt ---------------------------------------------------------------------