Value Type


Minimum Value


Maximum Value


Default Value



This parameter specifies the length of the DUT’s 6rd prefix. The prefix length must be an integer value between 1 and 128.

Some 6rd configuration examples:

Private WAN IPv4 Address

WAN IPv4 Address: 6rd Prefix: 2010:1234:: 6rd Prefix Length: 32 6rd IPv4 Mask Length: 8 6rd Delegated Prefix: 2010:1234:A8C8:0200:/56

Public WAN IPv4 Address

WAN IPv4 Address: 6rd Prefix: 2010:: 6rd Prefix Length: 16 6rd IPv4 Mask Length: 0 6rd Delegated Prefix: 2010:0C0C:0C02::/48

Note that stateless address autoconfiguration (autoconf) requires an IPv6 prefix less than or equal to 64 bits. The test run will be aborted if autoconf is used on the LAN and the DUT provides a 6rd prefix greater than 64 bits in length.