strange behaviour

[Chuck Swiger]

On Jan 14, 2011, at 1:36 PM, Коньков Евгений wrote:
> # ping 10.7.7.7
> PING 10.7.7.7 (10.7.7.7): 56 data bytes
> ping: sendto: Invalid argument
> ping: sendto: Invalid argument
> ping: sendto: Invalid argument
> 
> what is problem and how to fix??

Where are you routing 10.7.7.7 to?

If you don't have a specific internal route (or NAT) doing something with it, your upstream Internet routers ought to be returning ICMP host unreachable errors for RFC-1918 addresses...

Regards,
-- 
-Chuck