[BEHAVE] NAT logging drafts

[Dave Thaler <[e-mail]>]

We have two individual drafts under discussion:
* draft-sivakumar-behave-nat-logging (using IPFIX)
* draft-zhou-behave-syslog-nat-logging (using SYSLOG)

Based on the WG discussion to date, we as chairs are fine adopting
both documents as WG documents (so the next rev can be
draft-ietf-behave-...-00) with the following constraints...

The two documents appear to target the same scenario but expose
different information.   Our expectation is that the two mechanisms
will either be consistent (as much as allowed by the underlying protocols)
or else they will motivate why their scenarios are inherently different.
This is a requirement before going to WGLC.

At next IETF, we would like to see a presentation on the differences
in the data/events exposed by the two drafts, where the authors of both
drafts agree on what the differences are.   We can then use the meeting
to discuss what the right way to address each difference is.

-Dave and Dan