Routing to internet addresses ending with 255

[Manolis Kiagias]

Wojciech Puchar wrote:
>>>
>>> I have two home servers, on different locations, on two ADSL lines 
>>> using
>>> dynamic DNS. One is running Debian, the other FreeBSD 7.0-RELEASE.
>>>
>>> I usually ssh from one to the other. Today, the debian server had a
>>> public (internet) IP ending in 255. The FreeBSD 7.0 system refused to
>>> communicate with it. Another 6.3 system had no problem. The 6.3 and 7.0
>
> doesn't your 7.0 system has same first 3 bytes of IP, and badly set 
> netmask to /24 instead of narrower?
>
> i don't think it's freebsd version dependent, unless developers made a 
> bug.
>
>
all these systems are behind ADSL routers and use NAT. Their internal 
addresses are in the 192.168.0.X range.
I could easily consider this a problem of the (cheap) ADSL routers, but  
6 and 7 use the same model (OTOH, there may be different firmware versions).