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From: "YOSHIFUJI Hideaki / 吉藤英明" <yoshfuji@linux-ipv6.org>
To: cat@zip.com.au
Cc: linux-kernel@vger.kernel.org, netdev@oss.sgi.com,
	pekkas@netcore.fi, yoshfuji@linux-ipv6.org
Subject: Re: ipv6 and ipv4 interaction weirdness
Date: Fri, 11 Mar 2005 08:58:15 -0600 (CST)	[thread overview]
Message-ID: <20050311.085815.100748583.yoshfuji@linux-ipv6.org> (raw)
In-Reply-To: <20050311121655.GE14146@zip.com.au>

In article <20050311121655.GE14146@zip.com.au> (at Fri, 11 Mar 2005 23:16:55 +1100), CaT <cat@zip.com.au> says:

> If it bound to :: port 22 then 0.0.0.0:22 would fail.
> 
> On the other hand if I got it to bind to each address individually then
> both ipv4 (2 addresses) and ipv6 (1 address) binds would succeed.
> 
> Maybe I'm just looking at it wrong but shouldn't ipv4 and ipv6 interfere
> with each other?

It is 100% intended, even it is not similar to BSD variants do.

IPv4 and IPv6 share address/port space.
:: and 0.0.0.0 is special "any" address, thus they confict.
::ffff:a.b.c.d and a.b.c.d also conflict.

--yoshfuji

  parent reply	other threads:[~2005-03-11 14:56 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-03-11 12:16 CaT
2005-03-11 14:21 ` Simon Kelley
2005-03-11 14:58 ` YOSHIFUJI Hideaki / 吉藤英明 [this message]
2005-03-11 15:11   ` CaT

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