Name resolution with Sinus-111 wireless DSL router

[Thomas Hühn]

Hi

I use a Sinus-111 DSL router which also acts as a caching DNS.

Reproducibly it stops resolving any name whenever Ubuntu has been in the 
network. That also means that downloading security updates etc. while 
installing fails.

The only way I've found so far to make it work again is to reboot the 
router. Until Ubuntu is booted again. :-/

What's so special about Ubuntu? Debian testing works flawlessly, for 
example. Also Fedora Core.

<1098181845.5771.14.camel at localhost.localdomain> ("DNS issues") mentions 
similar but, I think, still other problems (resolution fails completely 
here, I don't add servers to resolv.conf).

Thomas