On Thu, 19 Jul 2018, [email protected] wrote:

Subject: [IPsec] I-D Action: draft-ietf-ipsecme-split-dns-11.txt

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-ipsecme-split-dns-11

This is probably wrong:

        Any INTERNAL_DNSSEC_TA attribute that is not immediately preceded by an
        INTERNAL_DNS_DOMAIN attribute MUST be ignored and treated as aprotocol 
error.

Because you can have more then one INTERNAL_DNSSEC_TA for one domain.
Instead, it should read:

        Any INTERNAL_DNSSEC_TA attribute that is not immediately preceded by an
        INTERNAL_DNS_DOMAIN or another INTERNAL_DNSSEC_TA attribute applying to
        the same domain name MUST be ignored and treated as a protocol error.

From the previous diff, I'm confused about:

        IKE clients MUST use a preconfigured whitelist of one or more domain
        which it will allow INTERNAL_DNSSEC_TA updates.

It could have an empty white list and use direct IP without split-dns ?
Or use the VPN as an "encrypted DNS" provider for everything (which is
allowed according to the spec, that is it does not violate a MUST NOT)

Also, since we allow signaling of "upgrade your IKE config out of band"
if you see a new unconfigured domain name in the reply, it could be that
you start with 0 and get a new one. Which also requires an empty list.

Paul

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