Hello,
Some comments.
In general, I think the approach is a good one. However, in the next
revisions (as was probably intended) there possibly needs to be much more
detailed descriptions on what is really necessary and what not. Also, in
some areas there may be need for a "Discussion" part.
And more detailed ones..
3.2 RFC2467 - A Method for the Transmission of IPv6 Packets over FDDI
Networks
A Method for the Transmission of IPv6 Packets over FDDI Networks
[RFC-2467] is conditionally mandatory if the node has a FDDI
interface.
[and others]
==> I'm not sure if this 'has XXX interface' is the right wording. IMO,
it's perfectly ok for an OS to be a conformant IPv6 node and NOT support
some legacy interfaces like FDDI or Token Ring, or whatnot. This is more
of a question what are the supported interfaces.
3.6 RFC2492 - IPv6 over ATM Networks
IPv6 over ATM Networks [RFC2492] is conditionally mandatory if the
node has an ATM interface.
==> PVC features yes, but are SVC functionalities also mandatory?
4.1.1 RFC2460 - Internet Protocol Version 6
Nodes must always be able to receive fragment headers. However, if it
does not implement path MTU it may not need to send fragment headers.
==> path MTU discovery.
==> take a look at draft-savola-ipv6-rh-hosts-00.txt, does some text
regarding the processing of RH's belong here or do we need to issue some
corrective/clarificative RFC's?
4.2.1 RFC2461 - Neighbor Discovery for IPv6
Receiving Router Advertisement is unconditionally mandatory for host
implementation, with a configuration option to disable this
functionality.
==> I guess the node must also process the RA, but that's semantics. Are
all features (now and future :-) in RA's a must to implement and support?
4.3.2 RFC2675 - IPv6 Jumbograms
IPv6 Jumbograms [RFC2675] is unconditionally optional.
4.4 ICMPv6
ICMPv6 [RFC 2463] is Unconditionally Mandatory.
==> there seem to be some differences with the capitalization of the magic
words.
4.6.2 RFC2710 - Multicast Listener Discovery (MLD) for IPv6
Multicast Listener Discovery [RFC-2710] is Conditionally Mandatory,
where the condition is if the node joins any multicast groups other
than the all-nodes-on-link group (which will always be the case if it
runs ND or DAD on the link).
==> That condition is this? The node always joins its solicited multicast
addresses (at least for link-local addresses), so this section would seem
to always evaluate to "Mandatory" ??
9.1 RFC2711 - IPv6 Router Alert Option
The Router Alert Option [RFC-2711] is conditionally mandatory if the
node does performs packet forwarding at the IP layer.
==> s/does performs/does perform/ ?
==> what kind of IP router is it if it doesn't forward packets at the IP
layer? (I have no idea..)
--
Pekka Savola "Tell me of difficulties surmounted,
Netcore Oy not those you stumble over and fall"
Systems. Networks. Security. -- Robert Jordan: A Crown of Swords
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