Enter the prefix that is transmitted with the router advertisements, e.g. "2001:db8::/64".
The length of the prefix must always be exactly 64 bits ("/64"), or else the clients will not be able to generate their own addresses by adding their "interface identifier" (64 bits long).
Note: If you wish to automatically use the prefix issued by the provider, then configure "::/64" here and enter the name of the corresponding WAN interface in the field PD-Source.
    - SNMP ID:
 - 2.70.2.1.2
 - Console path:
 - Setup > IPv6 > Router-Advertisement > Prefix-Options
 - Possible values:
 Max. 43 characters from [A-Z][a-z][0-9]#@{|}~!$%&'()*+-,/:;<=>?[\]^_. `
- Default:
 - empty