[enum-wg] DNSMON for enum zones

IMO, this issue straddles two WGs. The ENUM WG can (should?) look  
into operating requirements and recommendations for monitoring Tier-1  
DNS infrastructure. But it should not make policy in this area as it  
encroaches on National Matters. ISTR the WG already has an open  
action item on this topic. Changing the DNSMON service -- or  
extending its scope -- is something for the NCC Services working group.

Wearing my Board hat, I am extremely uncomfortable with the NCC  
straying from its core function (running an IP registry) by offering  
non-core services that could and should be provided by others. I hope  
DNSMON doesn't turn into a repeat of the current layer-9 issues with  
DNS hosting at the NCC.