[eix-wg] IPv6 Link Local Addressing on IXPs?

EIX WG, 

Eric and myself have put together an internet draft on the usage of IPv6 link local addressing on infrastructure links. The goal is to document what works and what doesn't when you only have IP6 link local addresses on such links. 

We were pointed to the fact that this question is also arising for IXPs, and have now tried to capture the high level view for IXPs. 

We'd appreciate feedback on our draft, specifically section 2.4
http://tools.ietf.org/html/draft-ietf-opsec-lla-only-02

Please let us know how we can improve the draft, specifically this section. Any feedback is welcome. If you are "okay" with the current draft, a quick note would also help us. 

Thanks!
Eric and Michael