On Mon, Mar 10, 2008 at 06:56:15PM +0000, Monkey D. Luffy wrote:
> Still, I look at my current IP and the mask seems odd (although I
> never did quite grasped the mask concept).
> inet addr:xxx.xxx.73.144 Bcast:xxx.xxx.73.255 Mask:255.255.252.0
> Shouldn't the mask's 3rd octet be 255?
If the third octet was 255, then the addresses available would be
xxx.xxx.xxx.[1-254]. With the third octet 252 as you said above, the
addresses available are xxx.xxx.[0-3].[1-255] as an example. It could
be any set of four 256 address blocks or 1024 addresses. It's just a
way to put more machines on the same subnet.
> And another strange thing shows in the log:
> 18 283.873122 192.168.2.100 239.255.67.250 IGMP V2
> Membership Report
>
> Why the heck does my computer want to communicate to that address?
That's a protocol that multicast uses to join multicast groups and
239.255.67.250 is the group number. Don't worry about it :)
Steve
