The value of vRtrInetStaticRouteNHTunnelName specifies the name
of the IPsec tunnel to be used for the nexthop of this static
route and it depends on the value of vRtrInetStaticRouteStaticType.
The value of vRtrInetStaticRouteNHTunnelName is valid only for static
routes configured for a vprn service. An 'inconsistentValue' error
is returned if an attempt is made to set this object for the base
instance which can be identified by vRtrID value of '1'.
At most only one of the values of the three objects:
vRtrInetStaticRouteNextHop, vRtrInetStaticRouteNextHopIf and
vRtrInetStaticRouteNHTunnelName can be a non null string.
If the value of vRtrInetStaticRouteStaticType is 'blackHole' then
the value of vRtrInetStaticRouteNextHopType should be 'unknown' and
the values of vRtrInetStaticRouteNextHop,
vRtrInetStaticRouteNextHopIf, vRtrInetStaticRouteNHTunnelName
should be null strings.