[IETFMIBS] mib root ?

[Hans Sjöstrand <hans.sjostrand at transmode.com>]

Hi,

In the mip4 group we are adding mib support for the RFC3519 "Mobile IP Traversal of Network Address Translation (NAT) Devices" to the mip mib. We decided not to extend the RFC2006bis with it, but instead write a extension mib, http://tools.ietf.org/html/draft-ietf-mip4-udptunnel-mib-01

The question is where this mib is best rooted. The intention was to root it under the assigned mipMIB OID { mib-2 44 } and then hand over the administration of that OID to IANA. Somewhat like it was done in MPLS , ...mib-2.transmission.mplsStdMIB (1.3.6.1.2.1.10.166) in http://www.iana.org/assignments/smi-numbers

But this seams not to be the most common way to take, more common is to root also extensions of existing wg mibs directly under mib-2. 

The questions are; 
- What are the advantages and disadvantages with the two approaches ? 
- Which is your recommendation (Or is there even a preferred third variant) ? 

Best regards
/// Hasse