[GLLUG] IP Address Issue

[Richard Houser]

Traditionally, the gateway is the lowest IP address (or sometimes the
highest).  It would be very unlikely to be right in the middle of a
range like that.  There are at least two different things wrong with
your situation, either it's a /22 and the netmask + router are wrong,
or it's a /24 and the whois + IP are wrong.  Either way, someone
screwed up bad somewhere.

On Mon, Oct 8, 2012 at 7:43 PM, Patrick Collora <collorap at pjc.name> wrote:
> Web browsing worked without the router, but I'm not sure that there wouldn't
> have been other issues.  I see the following in WHOIS.
>
> NetRange    108.68.140.0 - 108.68.143.255
> CIDR    108.68.140.0/22
>
> Does this suggest that the netmask should be 255.255.252.0, not
> 255.255.255.0?  Given the former, 108.68.143.0 should be free to assign.
>
> Cody Dean wrote:
>
> Normally they avoid the .0 when setting up an IP scheme, but it can be used.
> Found this: http://www.dslreports.com/forum/remark,22121455 which may be
> relevant.
>
> Were you able to connect without the router attached?
>
> Cody
>
>
> Richard Houser wrote:
>
> It depends on the netmask.  In this case, you are on a class C, so the first
> valid IP would start at 1 and go to 254 in the last octet.  Whomever setup
> that dhcp server is an idiot.
>
> On Oct 8, 2012 6:44 PM, "Patrick Collora" <collorap at pjc.name> wrote:
>>
>> Not Linux-specific, but maybe someone here knows the answer.  I was having
>> some trouble connecting to the Internet through my router, and I suspect it
>> might be due to the IP address I was assigned.  When I bypassed the router,
>> AT&T assigned the following to my PC.
>>
>>    IPv4 Address. . . . . . . . . . . : 108.68.143.0
>>    Subnet Mask . . . . . . . . . . . : 255.255.255.0
>>    Default Gateway . . . . . . . . . : 108.68.143.1
>>
>> Is the IP ending in zero valid, or is it the network identifier?
>>
>> Thanks.
>> -Patrick
>>
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>
>
> --
> Patrick Collora
>
>
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