Privilege levels can be configured on basis of commands allowed to be executed on that privilege level. It is not possible to restrict the execution of commands which are allowed based on its parameters. So you cannot make it to allow a ping to only one specific IP address and block the ping to others. You can use an access list to block ping to other IP addresses, however the access list will be applicable to all the users at any privilege level.
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...