Re: [IPsec] Éric Vyncke's No Objection on draft-ietf-ipsecme-ipv6-ipv4-codes-05: (with COMMENT)

[[e-mail]]

Bonjour Eric, 

Thank you for the comments. 

Please see inline. 

Cheers,
Med

> -----Message d'origine-----
> De : Éric Vyncke via Datatracker [mailto:[e-mail]]
> Envoyé : lundi 14 décembre 2020 09:17
> À : The IESG <[e-mail]>
> Cc : [e-mail]; ipsecme-
> [e-mail]; [e-mail]; David Waltermire
> <[e-mail]>; Yoav Nir <[e-mail]>;
> [e-mail]
> Objet : Éric Vyncke's No Objection on draft-ietf-ipsecme-ipv6-ipv4-
> codes-05: (with COMMENT)
> 
> Éric Vyncke has entered the following ballot position for
> draft-ietf-ipsecme-ipv6-ipv4-codes-05: No Objection
> 
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> 
> Please refer to https://www.ietf.org/iesg/statement/discuss-
> criteria.html
> for more information about IESG DISCUSS and COMMENT positions.
> 
> 
> The document, along with other ballot positions, can be found here:
> https://datatracker.ietf.org/doc/draft-ietf-ipsecme-ipv6-ipv4-codes/
> 
> 
> 
> --------------------------------------------------------------------
> --
> COMMENT:
> --------------------------------------------------------------------
> --
> 
> Bonjour Med,
> 
> Thank you for the work put into this document. The shepherd write-up
> is really terse but reflects that it was a rough consensus.
> 
> Please find below  some non-blocking COMMENT points (but replies
> would be appreciated), and some nits.
> 
> I hope that this helps to improve the document,
> 
> Regards,
> 
> -éric
> 
> == COMMENTS ==
> 
> -- Abstract --
> The one-line abstract does not really explain/summarize what this
> document is about. E.g., nothing is mentioned about 3GPP origin.
> Expanding the abstract with something like "by allowing the
> responder to signal to the initiator which address families are
> supported".

[Med] Fixed with s/supported/allowed. Thanks. 

> 
> -- Section 1 --
> The sentence "When the UE  attaches the network using a WLAN access
> by means of
> IKEv2 capabilities, there are no equivalent notification codes ..."
> looks cryptic to me. What is the link with WLAN access and IKEv2 ?
> 

[Med] WLAN is an example of what 3GPP calls "non-trusted access network". In such case, an IKEv2/IPsec is used to connect to the "3GPP network". We wanted to avoid overloading the text with 3GPP terms + avoid distracting the reader about trusted/non-trusted accesses. 

See the updated text at: https://tinyurl.com/ike-v4v6-codes. Better? 

> -- Section 5 --
>    "If a dual-stack initiator requests only an IPv6 prefix (or an
> IPv4
>    address) but only receives IP4_ALLOWED (or IP6_ALLOWED)
> notification
>    status type from the responder, the initiator MUST send a request
> for
>    IPv4 address(es) (or IPv6 prefix(es))."
> 
> Is it really a "MUST" and not a "SHOULD" or even "MAY" ? A
> constrained UE may have IPv6-only applications and, even if OS is
> dual-stack, not bothers to have a useless IPv4 address.
> 

[Med] Such constrained UE should be tweaked to behave as an "IPv6-only initiator". That is local to the UE.   

> The paragraph after this one mimics the 3GPP PDP behavior, but, does
> it make sense for IKEv2 ?

[Med] We want to have a functional parity for an UE independently of the access it uses to graft to a 3GPP network. 

> 
> == NITS ==
> 
> In several places, the word "responder" is misspelled.

[Med] Fixed the one reported by Murray. Will double check.

> 
> In some places, a ':' is followed by a capitalized word which looks
> weird to my French-reading eyes...

[Med] That's OK for the RFC Editor. You may check https://tools.ietf.org/html/rfc8801 :-) 


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