draft-bagnulo-pshim6-01.txt

[Deguang Le <[e-mail]>]

Dear Prof. Marcelo,
page5:
  When H1 sends the first packet addressed to the CMULA of H2, the
    packet is intercepted and processed by the P- Shim6 box of the
    multihomed site.

As above description, H1 sends the first packet, which uses the CMULA of 
H2 as the destination address. The CMULA is site-local adddress.

Since the destination addresss of the first packet is the CMULA of H2 
that belongs to H2's site, I wonder if this packet can be routed in H1's 
site.

The reasions are ss follows:
According to rfc2373, routers must not forward any packets with 
site-local source or destination addresses outside of the site.

Reference [12] has the following description:
Unique Local IPv6 Unicast Addresses are intended for local 
communications, usually inside of a site.

RFC4193 provides operational guidelines that forbid default routing of 
local addresses between sites in section 4.1.

By the way, the reference [12] seems have been updated by RFC 4193.
    [12]  Hinden, R. and B. Haberman, "Centrally Assigned Unique Local
          IPv6 Unicast Addresses", draft-ietf-ipv6-ula-central-01 (work
          in progress), February 2005.

Cheers,
Deguang