From: YOSHIFUJI Hideaki / 吉藤英明 <redacted>
Date: Fri, 01 Feb 2008 00:11:38 +1100 (EST)

In article [ref] (at Thu, 31 Jan 2008 15:41:58 +0300), Pavel Emelyanov [off-list ref] says:

quoted

Add the net parameter to udp_get_port family of calls and 
udp_lookup one and use it to filter sockets.

I may miss something, but I'm afraid that I have to disagree.
Port is identified only by family, address, protocol and port,
and should not be split by name space.

It is like being on a totally different system.

Without sockets in namespaces, there is no point.

The networking devices are even per-namespace already,
so you can even say that each namespace is even
physically different.