The value of the object svcIpipeIpv6CeAddressDiscovery
specifies whether the service will automatically discover
the CE IPv6 addresses.
If 'enabled', the addresses will be automatically
discovered on SAPs that support address discovery, and on
the Spoke SDPs. When 'enabled', addresses configuration
on the Ipipe SAP and Spoke SDPs will not be allowed.
If 'disabled', CE IP addresses need to be manually
configured for the SAPs to become operationally 'up'.
svcIpipeIpv6CeAddressDiscovery can only be enabled if
svcIpipeCeAddressDiscovery is 'enabled' first.