netdev - Re: ipv6_addr_type() and mapped IPv4 loopback

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Message-ID: <OFAE7E2AD1.D61365A4-ON882574F7.006F25B5-882574F7.006F9FD0@us.ibm.com>
Date:	Tue, 4 Nov 2008 12:19:15 -0800
From:	David Stevens <dlstevens@...ibm.com>
To:	Chuck Lever <chuck.lever@...cle.com>
Cc:	Brian Haley <brian.haley@...com>, netdev@...r.kernel.org,
	netdev-owner@...r.kernel.org
Subject: Re: ipv6_addr_type() and mapped IPv4 loopback

There is actually a difference.

The mapped-v4 loopback address uses IPv4 for packet
delivery while the IPv6 loopback uses IPv6. So, theoretically,
an application using a protocol-specific feature would need
to distinguish between the two.

I don't think it's a good idea to remap those to ::1.

                                        +-DLS

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