Thanks all for the replies. -- Prabhu H
On Fri, Jun 12, 2009 at 1:03 AM, Behcet Sarikaya <behcetsarik...@yahoo.com>wrote: > > Folks, > MLD also requires link-local IPv6 source addresses, RFC 3810, Sec. 5: > > All MLDv2 messages > described in this document MUST be sent with a link-local IPv6 Source > Address, an IPv6 Hop Limit of 1, and an IPv6 Router Alert option > [RFC2711] in a Hop-by-Hop Options header.. > > So no escape from the link-locals. > > Regards, > > Behcet > > > ----- Original Message ---- > From: Hemant Singh (shemant) <shem...@cisco.com> > To: Erik Nordmark <erik.nordm...@sun.com>; Prabhu Hariharan < > prab...@gmail.com> > Cc: ipv6@ietf.org > Sent: Wednesday, June 10, 2009 9:14:53 PM > Subject: RE: Is Link-Local address mandatory for a host device? > > Erik Nordmark wrote: > > >I suspect that you also can't use DHCPv6 for non-addresses (finding the > > >DNS servers etc) since DHCPv6 might assume that some communication uses > > >the link-local address. But I haven't checked in the RFC. > > Snipped from RFC 3315, section 1.1 is: > > [Clients and servers exchange DHCP messages using UDP [15]. The > client uses a link-local address or addresses determined through > other mechanisms for transmitting and receiving DHCP messages.] > > Using link-local for DHCPv6 has the advantage that well-known mcast > addresses can be used for clients to communicate with the server or > relay agents. RFC 3315 also mentions such an advantage in section 3. Of > course, even IPv6 mcast uses link-local address. So really, it is not > wise for a host to not use a link-local address at all. > > Hemant > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > ipv6@ietf.org > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- > > > > > >
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