Contains the prefix used by the provider for 6rd services, e.g. 2001:db8::/32.
Note: If the 6rd prefix is assigned through DHCPv4, you have to enter "::/32" here.
    - SNMP ID:
 - 2.70.1.3.5
 - Console path:
 - Setup > IPv6 > Tunnel > 6rd
 - Possible values:
 Max. 24 characters from [A-Z][a-z][0-9]/:
- Default:
 - empty