I have only two non-editorial issues (well, you could argue these are
kinda editorial too :-):
However, the IPv4 addresses might be a scarce resource for the mobile
operator or an ISP. In that case, it might not be possible for the UE
to have a globally unique IPv4 address allocated all the time. Hence,
the UE should either activate the IPv4 PDP Context only when needed,
or be allocated an IPv4 address from a private address space.
==> should "should" be really "could"? This document is not meant to give
solution(s), or advacate IPv4 NAT.
5. Security Considerations
This document does not generate any additional security
considerations.
==> as many, many drafts will try to pass with security considerations
like these, it might be best to be pre-emptive, and explain that there
really *are* no additional security considerations here (try to answer the
"why"), like:
This document describes possible transition scenarios for 3GPP
networks for future study. Solutions and mechanism are explored in
other documents: the description of the 3GPP network does not have
any security considerations.