Status update for WG ippm

In Singapore, the IPPM WG:

- discussed maintenance of its framework for IPv6 (WGLC is done and requires a writeup from the shepherd), 
- continued discussion of the WG IOAM data model and registry drafts
- moved to adopt Advanced Unidirectional Route Assessment and the Simple Two-way Active Measurement Protocol (STAMP), i.e. TWAMP without TWAMP-Control.

IPPM continues maintenance of OWAMP/TWAMP,  is moving toward publication of the registry, and continues work on IOAM.