nanog mailing list archives
Re: broken DNS proxying at public wireless hotspots
From: Trent Lloyd <lathiat () bur st>
Date: Sat, 3 Feb 2007 16:11:07 +0900
On Sat, Feb 03, 2007 at 01:00:29AM -0600, Stephen Sprunk wrote:
Thus spake "Trent Lloyd" <lathiat () bur st>One thing I have noticed to be unfortunately more common that I would like is routers that misunderstand IPv6 AAAA requests and return an A record of 0.0.0.1 So if you are using (for the most part) anything other than windows, or Windows Vista, this may be related to what you are seeing.The same is true if you've enabled IPv6 on XP. Unfortunately, it's hard to find a hotel network these days that _doesn't_ break when presented with AAAA queries. I'm hoping that the flood of support calls from Vista users will pressure them to get their systems fixed, but I'm not holding my breath. They'll probably just make "disable IPv6" part of their standard troubleshooting routine, just like telling you to reboot your PC. After all, nobody uses it, right?
Unfortunately this is something I'm afraid of, currently there is a long running bug[1] in the Ubuntu bug tracker on why they should disable IPv6 by default, which makes me sad, but I can understand why they would think that because to them it provides no advantage (yet), yet when disabled, it works for them. I have considered if some kind of "workaround" to the resolver which would ignore returns of 0.0.0.1 (possibly if there are other addresses, or only if AAAA is requested, etc) Is anyone aware of other "weird" things some routers return? Personally I have only seen 0.0.0.1 coming back. Cheers, Trent [1] https://launchpad.net/ubuntu/+source/netcfg/+bug/24828
S Stephen Sprunk "God does not play dice." --Albert Einstein CCIE #3723 "God is an inveterate gambler, and He throws the K5SSS dice at every possible opportunity." --Stephen Hawking
Current thread:
- broken DNS proxying at public wireless hotspots Suresh Ramasubramanian (Feb 02)
- Re: broken DNS proxying at public wireless hotspots Trent Lloyd (Feb 02)
- Re: broken DNS proxying at public wireless hotspots Stephen Sprunk (Feb 02)
- Re: broken DNS proxying at public wireless hotspots Trent Lloyd (Feb 02)
- Re: broken DNS proxying at public wireless hotspots Stephen Sprunk (Feb 02)
- Re: broken DNS proxying at public wireless hotspots Gadi Evron (Feb 02)
- Re: broken DNS proxying at public wireless hotspots Suresh Ramasubramanian (Feb 04)
- Re: broken DNS proxying at public wireless hotspots Peter Dambier (Feb 03)
- Re: broken DNS proxying at public wireless hotspots Carl Karsten (Feb 03)
- Re: broken DNS proxying at public wireless hotspots Steven M. Bellovin (Feb 03)
- Message not available
- Re: broken DNS proxying at public wireless hotspots Peter J. Cherny (Feb 03)
- Re: broken DNS proxying at public wireless hotspots Mark Foster (Feb 04)
- Re: broken DNS proxying at public wireless hotspots Peter J. Cherny (Feb 03)
- Re: broken DNS proxying at public wireless hotspots Trent Lloyd (Feb 02)
- <Possible follow-ups>
- Re: broken DNS proxying at public wireless hotspots Fergie (Feb 02)
- Re: broken DNS proxying at public wireless hotspots Joe Abley (Feb 02)
- Re: broken DNS proxying at public wireless hotspots william(at)elan.net (Feb 02)