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Subject: [Bug 213729] showmount doesn't work with IPv6
Date: Mon, 24 Oct 2016 21:25:42 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D213729

--- Comment #5 from Alan Somers <asomers@FreeBSD.org> ---
Everything is working as designed.  First, note that "showmount -e ::1" ret=
urns
immediately.  Second, note that "showmount -e" will return eventually, but =
it
takes 2 minutes to timeout.  You probably didn't give it the full two minut=
es
before.

What's going on is that if you don't specify "::1" then showmount assumes y=
ou
meant "localhost", and it tries to find the best way to talk to localhost. =
 It
will try both ::1 and 127.0.0.1 with both tcp and udp.  But since udp is
connectionless, it has no way of knowing whether rpcbind is listening excep=
t by
waiting for the full timeout period.

The timeout is adjustable in the RPC library (using the undocumented
__rpc_control), but showmount currently uses the default.  Does that solve =
your
problem?

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