[H-GEN] traceroute results query

Craig Eldershaw ce at comlab.ox.ac.uk
Tue Oct 24 06:55:22 EDT 2000


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>what do the !X 's mean?  I have no idea

from man traceroute(8):

       Other  possible  annotations after the time are !H, !N, or
       !P  (got  a  host,  network   or   protocol   unreachable,
       respectively),  !A,  !C  (access  to  the network or host,
       respectively, is  prohibited),  !S  or  !F  (source  route
       failed  or  fragmentation needed - neither of these should
       ever occur and the associated gateway is busted if you see
>>>    one),  !X  (communication administratively prohibited), or
       !<N> (ICMP unreachable code N).  If almost all the  probes
       result  in  some kind of unreachable, traceroute will give
       up and exit.

C.

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