#1: Proper source for an "Interface Identifier"
Changes (by fg...@si6networks.com):
* status: new => closed
* resolution: => fixed
Comment:
The "Interface Identifier" has now been replaced with a generic
"Net_Iface" parameter, and we describe what are the required properties
for this ID. Additionally, Appendix A is devoted to an analysis of
possible sources for the Net_Iface parameter, and their pros and cons.
From Section 3:
RID = F(Prefix, Net_Iface, Network_ID, DAD_Counter, secret_key)
[....]
Net_Iface:
An implementation-dependent stable identifier associated with
the network interface for which the RID is being generated.
An implementation MAY provide a configuration option to select
the source of the identifier to be used for the Net_Iface
parameter. A discussion of possible sources for this value
(along with the corresponding trade-offs) can be found in
Appendix A.
[....]
The Net_Iface is a value that identifies the network interface for
which an IPv6 address is being generated. The following properties
are desirable for the Net_Iface:
o it MUST be constant across system bootstrap sequences and other
network events (e.g., bringing another interface up or down)
o it MUST be different for each network interface
Since the stability of the addresses generated with this method
relies on the stability of all arguments of F(), it is key that the
Net_Iface be constant across system bootstrap sequences and other
network events. Additionally, the Net_Iface must uniquely identify
an interface within the node, such that two interfaces connecting to
the same network do not result in duplicate addresses. Different
types of operating systems might benefit from different stability
properties of the Net_Iface parameter. For example, a client-
oriented operating system might want to employ Net_Iface identifiers
that are attached to the underlying network interface card (NIC),
such that a removable NIC always gets the same IPv6 address,
irrespective of the system communications port to which it is
attached. On the other hand, a server-oriented operating system
might prefer Net_Iface identifers that are attached to system slots/
ports, such that replacement of a network interface card does not
result in an IPv6 address change. Appendix A discusses possible
sources for the Net_Iface, along with their pros and cons.
--
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Reporter: fg...@si6networks.com | Owner: Fernando Gont
Type: defect | Status: closed
Priority: major | Milestone:
Component: stable-privacy-addresses | Version:
Severity: Active WG Document | Resolution: fixed
Keywords: |
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Ticket URL: <http://tools.ietf.org/wg/6man/trac/ticket/1#comment:1>
6man <http://tools.ietf.org/wg/6man/>
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