Re: [PATCH net-next] IPv6: enable TCP to use an anycast address

On Sat, 1/11/14, Christoph Paasch [off-list ref] wrote:

quoted

On 11/01/14 - 05:06:10, François-Xavier Le Bail wrote:
On Sat, 1/11/14, Alexey Kuznetsov [off-list ref] wrote:
As said in http://tools.ietf.org/html/draft-iab-anycast-arch-implications-12.html#section-2.1
(this informational draft is in RCF queue)

This draft does not say that TCP should be used with anycast
addresses. Rather the opposite:

"  This document does not treat in any depth
  the fact that there are deployed services with TCP transport using
  anycast today.  Evidence exists to suggest that such practice is not
  "safe" in the traditional and architectural sense (as described in
  Section 4.2). "

And Section 4.2 gives more information.
http://tools.ietf.org/html/draft-iab-anycast-arch-implications-12.html#section-4.2

The draft say there are use cases for TCP with anycast services.
The DNS use case is widely deployed in real word.

I think enabled such possibility in Linux kernel is useful.

It's only a possibility for such use cases and it's dont break usual TCP usage.

Francois-Xavier