help needed for Ubuntu 8.04 on HP 6720s notebook

[Brian McKee]

Abhishek, please don't top post.  I've re-edited a bit below.  Read on.

On Mon, Sep 8, 2008 at 10:08 AM, Derek Broughton <news at pointerstop.ca> wrote:
>> On Sat, Sep 6, 2008 at 8:06 PM, Brian McKee <brian.mckee at gmail.com> wrote:
>>> On Sat, Sep 6, 2008 at 10:33 AM, Brian McKee <brian.mckee at gmail.com>
>>> wrote:
>>> > On Sat, Sep 6, 2008 at 2:23 AM, Abhishek Bawkar
>>> > <abhishek.linux4me at googlemail.com> wrote:
>>> >> iface eth0 inet static
>>> >> address 100.100.102.192
>>> >> netmask 255.255.255.0
>>> >> gateway 100.100.100.1
>>> >
>>> > Shouldn't that be gateway 100.100.102.1 not 100.1 ?  (or maybe the
>>> > address should be 100.192 not 102.192)  Your gateway is not in the
>>> > default subnet.
>
> Not only that - shouldn't the addresses be 10.10.*?  You _mustn't_ just make
> up IP addresses, and my recollection is that 100.100 is not a private
> address.  You can use 192.168.*.* and 10.*.*.*, and I know there's another
> one, but I haven't needed to remember it...
172.16.0.0/12

samspade.org says the 100.100 range is reserved by iana

http://www.iana.org/assignments/ipv4-address-space/ says 100/8 is
'unallocated' which means they haven't given it out yet I think.
Maybe those documents are out of date.

>> I confirmed it again on windows settings, there are as mentioned below,
>>
>> *IP address:      100.100.102.192*
>> *Subnet mask:  255.255.255.0*
>> *Gateway:        100.100.100.1*
>> *DNS:               100.100.100.1*
>> And, with these settings, my internet connection works fine on both,
>> Laptop and Desktop. I use the same connection either on Laptop or on
>> desktop at a time. On both the machines it works fine on windows.

>> But, it's not working on Ubuntu. I could setup my desktop as Proxy, but i
>> want direct connection on my laptop.

>>> If your gateway is outside the LAN of your eth card, then you'd have
>>> to add a static route to get there, which is possible I suppose, but
>>> I'm betting on a typo.
>> By *adding a static route*, did you mean
>> this<http://www.pcbuyersguide.co.za/showthread.php?t=6927>

yes, that's the kind of static route I meant.

>> What care should I take, if i do add a static route??
>> I have *tried* changing *Subnet mask* to* 255.255.254.0,* didn't make any
>> difference. :-(

Well, the subnet mask would have to be something more like 255.255.0.0
to include those two numbers.   But, you said that the other subnet
mask was correct for Windows.

I get the feeling we're missing something here.  Does your ISP have a
web page where they detail how to set up Windows?

Brian