Hitachi GR2000 manual Maximum Number of IPv6 Addresses to be Set, Number of Tunnel Interfaces

over IPv4 tunnel is shown in Table 4-66. The total number of both tunnel interfaces must be lower than the value shown in Table 4-66

Table 4-66	Number of Tunnel Interfaces
Router Model				Number of interfaces
			IPv4 over IPv6	IPv6 over IPv4	Per Router
GR2000-2S		256		256	256
GR2000-4S				1024	1024
GR2000-6H
GR2000-10H
GR2000-20H

(Note) For previous versions, the number of settings is 256 in all cases. When setting 1024 interfaces, use of RP-C6/RP-D6 is a prerequisite.

4.2.12.8Maximum Number of IPv6 Addresses to be Set

The maximum number of IPv6 addresses that can be set using configuration