Daniel,
Yes. Definitely L=1
The ULA document defines how to creates a local prefix for the site.
A node would create it's interface IDs in the normal matter as
specified in RFC4291. Nothing special is required or even desired.
The L bit setting is independent of the prefix (global unicast, link-
local, ULA, etc.).
So, universal/local bit = 1. Because ULA provides its globally
uniqueness.
Correct ?
No, the universal/local bit could be 1 or 0, depending on the source
of the token used to create it.
From the RFC4291 IPv6 Address Architecture:
2.5.1. Interface Identifiers
Interface identifiers in IPv6 unicast addresses are used to identify
interfaces on a link. They are required to be unique within a
subnet
prefix. It is recommended that the same interface identifier not be
assigned to different nodes on a link. They may also be unique over
a broader scope. In some cases, an interface's identifier will be
derived directly from that interface's link-layer address. The same
interface identifier may be used on multiple interfaces on a single
node, as long as they are attached to different subnets.
Note that the uniqueness of interface identifiers is independent of
the uniqueness of IPv6 addresses. For example, a Global Unicast
address may be created with a local scope interface identifier and a
Link-Local address may be created with a universal scope interface
identifier.
Hope that helps.
Bob
--------------------------------------------------------------------
IETF IPv6 working group mailing list
ipv6@ietf.org
Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6
--------------------------------------------------------------------
