no internet connection

[Carl Karsten]

philipp sutter wrote:
> hi, i just installed ubunte 5.10 on two computers. one is a laptop. on
> both i do not get an internet connection. the strange thing is that the
> laptop can establish a connection in my office where i have an other
> isp. but when i connect the laptop at home i dont get a connection (no
> ip, no dns; nore when i use fixed ip). the pc and the laptop uses at
> home the same isp (chello.at). 
> has anybody an idea how to solve this problem. thanks for any hint.
> 
> 
http://www.chello.at/Support shows:

Proxy-Server
Wien: proxy.chello.at:8080

DNS
195.34.133.13, 195.34.133.2

Which makes me think it may not be a "normal" ISP.  But I don't read German (?) so 
I have no clue what that page says.

Long shot: the ISP requries some sort of ClientID to be sent as part of the DHCP 
request.

^C