EHOSTUNREACH returned for refused IPv6 connection

Terry Kennedy TERRY at tmk.com
Mon Dec 6 06:41:15 UTC 2010


> Sorry, you're right: I forgot I don't have my tunnel setup so there's no
> external IPv6 connectivity (I don't have an IPv6 network configured at
> the moment at all). What confused me initially was the fact that ssh
> displays the "No route to host" error instead of "Connection refused"
> when both IPv4 and IPv6 addresses are available but only IPv4 works.

  I'm experiencing something which may be related. I posted a question in
the FreeBSD Forums: http://forums.freebsd.org/showthread.php?t=19895

  I don't get anything displayed at the application (ftp / telnet / etc.)
level - it just hangs until the connection eventually times out. I do see
unreachables getting into the FreeBSD box - it just seems like they don't
make it down to the application level. The post I linked above has a more
detailed description, as well as tcpdump output and so forth.

  System is 8-STABLE as of November 28th, but I see the same thing on a
6-STABLE from February 2010.

        Terry Kennedy             http://www.tmk.com
        terry at tmk.com             New York, NY USA


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