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[6bone] ifconfig and EUI-64
Date: Wed, 12 Jun 2002 19:11:29 +0200
From: Francis Dupont <[email protected]>
Message-ID: <[email protected]>
| => this option is not documented but gives a way to disable the
| automatic (i.e. out of control) generation of a link-local address
| when an interface comes up.
Thanks for the explanation, that's what I guessed when you mentioned it.
| => this is a matter of wording: my idea is the IID doesn't exist by itself.
That's something with which I disagree then, as I believe it does,
though certainly it is a minor point.
| And I assume that to have a link-local address is equivalent to have IPv6
| enabled on the interface.
Yes I would treat those two as being essentially the same, no IPv6 operating
interface should ever be without a LL address.
| => but there is no need to have several too...
No, it isn't required (except perhaps for a node acting as a proxy for
another node - wouldn't a VRRP router need to take over the LL address
of the router it is pretending to be, and wouldn't a HA need to at least
act as if it owns the addresses of mobile nodes?)
But there's a difference between not being required (if it never is) and
not being useful. I see no reason to forbid multiple LL addresses for
| => this is the point we disagree: I want only one link-local for the
| interface and the (unique) IID is taken from the link-local.
Yes, that's where we disagree.
| I don't believe the result will be very different but this is not exactly
| the same thing.
Not very different, we both want the same functionality, I just want a
little more generality than you do.
Also, if I decide that fe80::1 is the one and only LL addr for an
interface, that doesn't mean that I want 3ffe:abcd::1 to necessarily
be the global address assigned - in many cases I'd still like that one
to be EUI-64 based.
So, I really would prefer to separate the issues of assigning a LL
address, and setting the IID that should be used to auto-configure
| As I've said our disagreement is only about details...
Almost, but not quite.
| PS: for an obscure reason KAME /etc/rc.network6 script supports full
| addresses and prefixes but in the wrong order...
I use KAME as incorporated into NetBSD, which has no such script,
(IPv6 stuff is handled along with IPv4 stuff in /etc/rc.d/network)
so I'm afraid I can't quite follow that reference.