From mboxrd@z Thu Jan  1 00:00:00 1970
From: Cong Wang <xiyou.wangcong@gmail.com>
Subject: Re: [PATCH iproute2 v5] vxlan: Allow setting destination to unicast
 address.
Date: Fri, 19 Jul 2013 08:12:40 +0000 (UTC)
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References: <877ggpy15n.wl%atzm@stratosphere.co.jp>
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On Wed, 17 Jul 2013 at 09:40 GMT, Atzm Watanabe <atzm@stratosphere.co.jp> wrote:
> This patch allows setting VXLAN destination to unicast address.
> It allows that VXLAN can be used as peer-to-peer tunnel without
> multicast.
>
...
>  {
> -	fprintf(stderr, "Usage: ... vxlan id VNI [ group ADDR ] [ local ADDR ]\n");
> +	fprintf(stderr, "Usage: ... vxlan id VNI [ remote ADDR ] [ local ADDR ]\n");

This clearly breaks existing scripts, you should keep 'group' and just add
'remote'.