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From: Vlad Yasevich <vladislav.yasevich@hp•com>
To: netdev <netdev@vger•kernel.org>
Subject: Configuring the same IP on multiple addresses
Date: Mon, 29 Oct 2007 14:03:37 -0400	[thread overview]
Message-ID: <47262079.90507@hp.com> (raw)

Hi All

Does anyone have a reason why Linux allows one to configure
the same IP or IPv6 address on multiple interfaces?

For IPv4, since linux implements a weak host model, assigning
duplicate addresses doesn't make any sense, since the addresses
really belong to the host and not the interface.

For IPv6, I can see allowing duplicate link-locals since that's
perfectly valid from the protocol perspective.  However, duplicate
globals are shouldn't be allows from the perspective of the address
architecture.

So, I am looking for technical reasons why this is permitted.

Thanks
-vlad

next             reply	other threads:[~2007-10-29 18:05 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-10-29 18:03 Vlad Yasevich [this message]
2007-10-29 19:36 ` Configuring the same IP on multiple addresses David Stevens
2007-10-29 19:44   ` Vlad Yasevich
2007-10-29 20:36     ` David Stevens
2007-10-29 22:25 ` David Miller
2007-10-29 22:42   ` David Miller
2007-10-30  4:23     ` Brian Haley
2007-10-30 13:47     ` Vlad Yasevich

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