In reply to a post by pete_thomson:

Is this normal?

It's certainly what has been happening here. I assumed Virgin had changed their DHCP server, but I can't get any answer out of them.

The previous post I made about the time-outs are a load of [censored]. Please ignore it

Hi all. I'm new here and registered as it appears I have a problem very similar to the ones listed above. I'm not very techy so please excuse the words of a layman I am likely to use. I have a home network connected to a linksys router with a varity of wired and wireless connections. Wired I have a networked TV, Blu-ray player, PC and Printer. Wireless connections of 2 x mobile phones, a laptop and my daughters iPod touch. All worked fine (apart from the occasional drop of network when I just switch the router off then on again) until Tuesday when the connection to the internet on the wired TV, Blu-ray and PC and the wireless mobiles and iPod was lost. They were still connected to the network though. I have tried resetting but none will reconnect. The TV says there is a DHCP error and the phones say there's an error obtaining an IP address. Virgin Media won't help. As I still have a connection on one laptop they say the internet connection must all be working fine. Can someone point me in the right direction to remedy this please. I'd be so grateful.

It your local devices are not getting an ip address from the linksys then that it really a problem between your devices and the linksys. Virgin won't support something like that because then they would have to support every router and every device. It just not possible.

We are talking about a compatibility issue with a router and virgin. Then trying to figure out if its virgin or the router.

interesting info, but dhcp renew does work ignition without rebooting the modem.

Even with a MAC address change?

In reply to a post by Chrysalis:

interesting info, but dhcp renew does work ignition without rebooting the modem.

Afraid if you change the client MAC address, IE through connecting a new router it certainly doesn't. Never disputed that it works with the same client machine / router attached to modem, that's required else how would your router stay connected beyond its first lease?

That or you have some unique modem, as I have never, in all the time I've been on forums, worked with cable, had cable, seen anyone able to attach multiple devices to a modem in turn and have them work without a reboot in between bar those on packages with max-cpe higher than one.

When I swapped in the vmng300 from the superhub it worked but that of course was also swapping the modem.

What I cannot remember is when I last spoofed the mac on the router if dhcp renew was enough or not, I think it was but I cannot remember properly. Of course its still limiting to 1 router to the modem, because if the old mac is recconected that will also need a dhcp renewal, both dont work at once.

I dont feel like testing so I wont know on this until I feel the need to try it again I guess.

Haven't managed to do any detailed investigation yet, as I could only find an RVS4000 which, whilst is running Linux doesn't have a xWRT port (yet). Time pressures mean I can't fiddle too much to get some sort of control into there but will try in a couple of weeks.

Suiffice to say the RVS4000 connected fine first time and the ciso is working just fine as a DMZ host behind it - not ideal but will do for the time being.

Point is the MAC address doesn't change. The modem tracks what's connected to it via MAC address so spoofing will, of course, work.

That is the only circumstance under which you can change devices without a reboot.