[131392] in North American Network Operators' Group
=?windows-1252?Q?Re:_IPv6_fc00::/7_=97_Unique_local_addresses?=
daemon@ATHENA.MIT.EDU (Owen DeLong)
Fri Oct 22 18:44:30 2010
From: Owen DeLong <owen@delong.com>
In-Reply-To: <20101023034834.15fec97c@opy.nosense.org>
Date: Fri, 22 Oct 2010 15:42:41 -0700
To: Mark Smith <nanog@85d5b20a518b8f6864949bd940457dc124746ddc.nosense.org>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
>>>=20
>> Actually, it's not pointless at all. The RA system assumes that all =
routers
>> capable of announcing RAs are default routers and that virtually all =
routers
>> are created equal (yes, you have high/medium/low, but, really, since =
you
>> have to use high for everything in any reasonable deployment...)
>>=20
>=20
> No it doesn't. You can set the router lifetime to zero, which =
indicates
> to the end-node that the RA isn't announcing a default router. In this
> case, it may be announcing M/O bit, prefix or other parameters.
>=20
DHCPv6 can selectively give different information to different hosts
on the same wire segment.
RA cannot.
>> There are real environments where it's desirable to have a way to =
tell
>> different clients on a network to use different default gateways or
>> default gateway sets.
>>=20
>> Owen
>>=20
