[ewg] Re: [ofw] SC'09 BOF - Meeting notes

[Roland Dreier]

 > RFC 4291, Appendix A.

Thanks for the pointer.  As far as I can tell from reading some IPv6
stuff, it really is broken to try to go from a link-local IPv6 address
back to a L2 ethernet address.  For example, RFC 2464 (pointed to by RFC
4291) says:

    Ethernet Address
               The 48 bit Ethernet IEEE 802 address, in canonical bit
               order.  This is the address the interface currently
               responds to, and may be different from the built-in
               address used to derive the Interface Identifier.

It really seems to be setting ourselves up for trouble not to use
neighbor discovery to map IPv6 addresses to link-layer addresses.

 - R.