Sorry for the delay.

I have not identified any new security issues. However, I want to note that several concerns raised against earlier versions remain unaddressed in v06 as well. Also it looks like that v06 has regressed. The cross-reference to snac-simple's security considerations was deleted. Section 6 now provides less guidance than earlier. 

These 2 issues are still unaddressed:
  
* An on-link attacker can forge the SNAC flag and affect SNAC router behavior. RFC 4861's Hop Limit=255 only protects against off-link attackers.
* An on-path attacker can strip the SNAC flag from a legitimate RA before forwarding it, causing receiving devices to fall back to degraded behavior silently.

If I am missing some conversation here, please let me know but I would like to ensure that we clarify this before moving forward.