Re: misc/117711: rpcbind binds to all interfaces on random ports even when using the -h flag

The following reply was made to PR kern/117711; it has been noted by GNATS.

From: Remko Lodder <remko@xxxxxxxxxxx>
To: Carlos Eduardo Monti <slaytanic@xxxxxxxxx>
Cc: freebsd-gnats-submit@xxxxxxxxxxx,
Matteo Riondato <matteo@xxxxxxxxxxx>
Subject: Re: misc/117711: rpcbind binds to all interfaces on random ports
even when using the -h flag
Date: Wed, 31 Oct 2007 10:55:13 +0100

Carlos Eduardo Monti wrote:
Description:
rpcbind opens two sockets on all interfaces on random ports when specified the -h flag, one socket for udp4 and one for udp6.

How-To-Repeat:
overnight# sockstat | grep rpcbind
overnight# rpcbind -h 192.168.0.3
overnight# sockstat | grep rpcbind
root rpcbind 2696 4 udp6 *:* *:*
root rpcbind 2696 5 stream /var/run/rpcbind.sock
root rpcbind 2696 6 udp6 ::1:111 *:*
root rpcbind 2696 7 udp6 *:* *:*
root rpcbind 2696 8 udp6 *:617 *:*
root rpcbind 2696 9 tcp6 ::1:111 *:*
root rpcbind 2696 10 tcp6 *:* *:*
root rpcbind 2696 11 udp4 127.0.0.1:111 *:*
root rpcbind 2696 12 udp4 192.168.0.3:111 *:*
root rpcbind 2696 13 udp4 *:944 *:*
root rpcbind 2696 14 tcp4 127.0.0.1:111 *:*
root rpcbind 2696 15 tcp4 192.168.0.3:111 *:*
overnight# killall rpcbind
overnight# rpcbind -h 192.168.0.3
overnight# sockstat | grep rpcbind
root rpcbind 2701 4 udp6 *:* *:*
root rpcbind 2701 5 stream /var/run/rpcbind.sock
root rpcbind 2701 6 udp6 ::1:111 *:*
root rpcbind 2701 7 udp6 *:* *:*
root rpcbind 2701 8 udp6 *:943 *:*
root rpcbind 2701 9 tcp6 ::1:111 *:*
root rpcbind 2701 10 tcp6 *:* *:*
root rpcbind 2701 11 udp4 127.0.0.1:111 *:*
root rpcbind 2701 12 udp4 192.168.0.3:111 *:*
root rpcbind 2701 13 udp4 *:804 *:*
root rpcbind 2701 14 tcp4 127.0.0.1:111 *:*
root rpcbind 2701 15 tcp4 192.168.0.3:111 *:*


Isn't this just behaviour of RPCbind which selects some random sockets
by default? the -h is used to bind it to a specific IP address, not to
bind it to specific ports (as far as i can recall), so what you are
printing is really what I would expect it to be.

Matteo, you worked on this recently, can you shed a light on this? and
if my reasoning above is correct, can you please close the ticket since
it's desired behaviour?

Thanks
remko

--
Kind regards,

Remko Lodder ** remko@xxxxxxxxxxxx
FreeBSD ** remko@xxxxxxxxxxx

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