Adrian Chapela wrote:

>Yes, I know... but Why can't I  see the icmp packets goin throw the
>tunnel interface ?? I see a GRE packet-- > 12:56:16.397645 IP
>77.209.87.193 > semsor10.local: GREv0, length 88: IP 172.16.1.2 >
>172.16.1.1: ICMP echo request, id 63499, seq 151, length 64
>
>This is a encapsuled packet of a ping from  172.16.1.2  to 172.16.1.1
>and this is the response:
>
>12:56:16.397802 IP semsor10.local > 77.209.87.193: ICMP semsor10.local
>protocol 47 port 2048 unreachable, length 116
>
>This is the problem... Why is the eth0 responding an answer to another
>interface ??

It isn't ! interfaces do not "respond to another interface" - they 
only send packets given them by the protocol stacks above. 
77.209.87.193 is not flagged as being at the other end of tunnel0, 
therefore it is routed via eth0 - and if you look, it is NOT a 
response to the ping, it is a "destination unreachable" response to 
the encapsulated packet.

What have you set as the public address for the other end of the 
tunnel (REMOTE_INET_ADDRESS in your original message) ? Is it 
77.209.87.193 or 172.16.1.2 ?


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