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Author Topic: DIR-655 not decrementing TTL counter across the WAN  (Read 3643 times)

funchords

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DIR-655 not decrementing TTL counter across the WAN
« on: November 21, 2008, 11:42:59 PM »
The DIR-655 is not decrementing the TTL counter on IP packets (required by RFC 791/STD 5 and years of practice).  If confirmed, then bug breaks common debugging tools such as traceroute.  Observed using traceroute tools by  Microsoft WinXP SP3 and linux traceroute v 2.0.11 [Butskoy].

To reproduce -- using a system behind the DIR-655, do a traceroute (windows tracert).  Note that the DIR-655 hop does not appear in the output.  Using a system behind a different router (perhaps different family of routers, as the DIR655 probably shares code with similar routers), note that the router is indicated.

Ping with a TTL of 1 elicits a response from the second hop.  It should get a response from the DIR655.
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