On 2008-03-14 at 10:44 +0100, Renaud Allard wrote:
> Zbigniew Szalbot wrote:
> >  9  pos0-0-2-0.daltr1.Dallas.opentransit.net (193.251.241.17)  158.566
> > ms  158.634 ms  158.842 ms
> > 10  so-3-0-0-0.dalcr2.Dallas.opentransit.net (193.251.241.18)  157.308
> > ms !A  157.348 ms !A  156.995 ms !A
> > 
> 
> Is it all the input your tcptraceroute gives? I don't see any reason why
> it stops at the 10th hop, except if you told tcptraceroute to do so. By
> default it should use 30 hops.

The "!A" means Administrative Prohibition; more precisely, ICMP 3,
"Destination Unreachable", Code 11, "Destination Network Unreachable for
Type of Service".

Either regular traceroute was used, or tcptraceroute on a port which
isn't open on a firewall / border ACL / whatever.

-Phil

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