From: Phil Pennock <phil.pennock@spodhuis.org>
To: Michael Richardson <mcr@sandelman.ca>
Cc: cerowrt-users <cerowrt-users@lists.bufferbloat.net>
Subject: Re: [Cerowrt-users] 6in4 links
Date: Mon, 10 Dec 2012 03:45:22 -0500 [thread overview]
Message-ID: <20121210084522.GA93640@redoubt.spodhuis.org> (raw)
In-Reply-To: <3147.1355105084@obiwan.sandelman.ca>
On 2012-12-09 at 21:04 -0500, Michael Richardson wrote:
> The problem is that the interface that is created is a /128, and it's
> the ::2, but since it is a /128, the ::1 isn't "On-network", so the
> static route fails.
Er, a /128 means there can be no route associated with it, this is used
typically for things like additional aliases on an interface. To use
this for sending traffic, you'd need a concept of "pump to far side"
which exists for things like a tunnel, but not for stf0, which is able
to talk to arbitrary end-points.
For stf0, perhaps you want a /16 ?
You might want a /127 per RFC 6164 (and RFC 6547 explicitly
recategorised the /127s-harmful RFC as historic). Note that a ::1 and a
::2 would still be on different networks for a /127. You perhaps want
::2 and ::3 (or a /126 but then consider the ping-pong issues).
-Phil
next prev parent reply other threads:[~2012-12-10 8:45 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-10 2:04 Michael Richardson
2012-12-10 8:20 ` Dave Taht
2012-12-10 8:45 ` Phil Pennock [this message]
2012-12-10 8:47 ` Dave Taht
2012-12-10 9:01 ` Phil Pennock
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