This issue has been dealt with here. The declab.net site runs a dedicated VAX with Multinet that polls the other end at predetermined intervals. When the other ends' address changes this end makes change to the Multinet database and reboots. This software has been in use for well over a year and appears to work very well. It does require the use of DynDNS at the end that changes addresses so that this end can do the lookup. -Steve -----Original Message----- From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf Of Mark Wickens Sent: Thursday, September 15, 2011 17:14 To: hecnet at Update.UU.SE Subject: Re: [HECnet] Alternatives to bridge when running via a dynamic IP address On 15/09/11 22:03, hvlems at zonnet.nl wrote: Won't the IP address remain unchanged as long as you keep the router up and running? Or would thet be too costly? ------Origineel bericht------ Van: Mark Wickens Afzender: owner-hecnet at Update.UU.SE Aan: hecnet at Update.UU.SE Beantwoorden: hecnet at Update.UU.SE Onderwerp: [HECnet] Alternatives to bridge when running via a dynamic IP address Verzonden: 15 september 2011 22:53 Guys, Might as well explore this as an option. The 3G network enabled Vigor 2800 router that I will be using at the DEC Legacy event appears to be working reasonably well, but unsurprisingly there does appear to be some fluctuation in the IP address. This means that an alternative to Johnny's bridge program might be called for. I have a dynamic DNS reference set up and now updating periodically, hecnet.no-ip.org, the question is what can I use as an alternative to the bridge program which will cope with IP address changes? I seem to remember Multinet tunnels being mentioned in the past, do they support dnydns, or any other technology? Thanks for the help, Mark. Unfortunately not. I've seen three IP address changes in about the same number of hours. I don't know whether this poor performance is down to the completely haphazard location of the dongle, or whether it's always this rubbish but you don't realise when all you're doing is browsing the internet. My experience of using a 3G dongle for anything other than web browsing is very limited! Regards Mark.