netdev - RE: [Patch iproute2] vxlan: use 8472 as default dst port

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Date:	Thu, 16 May 2013 09:24:47 +0100
From:	"David Laight" <David.Laight@...LAB.COM>
To:	"David Stevens" <dlstevens@...ibm.com>,
	"Stephen Hemminger" <stephen@...workplumber.org>
Cc:	"Cong Wang" <amwang@...hat.com>, <netdev@...r.kernel.org>,
	<netdev-owner@...r.kernel.org>
Subject: RE: [Patch iproute2] vxlan: use 8472 as default dst port

> > From: Stephen Hemminger <stephen@...workplumber.org>
> >
> > I want all new users to get the IANA port without asking.
> > Old users with existing nets have to force the port to the one they
> > were using.
> 
> That'd be great -- what we're getting is all new users are getting
> a listen port of 8472 and a send port of 4789. So new users who aren't
> aware of why will simply see that two *new* installations don't talk
> to each other (and never will, using default ports, because the kernel
> and ip will need to be compatible with their incompatible selves).

Could the kernel listen on both port numbers?
Then the default 'send' port could be changed while maintaining
functionality for existing systems.

At some later time the listener on 8372 could be removed.

	David



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