ZyXEL Communications ZyWALL USG Series Application Notes page 110

In the CONFIGURATION > Network > Interface > Ethernet screen, double-click the lan1 in
1
the IPv6 Configuration section.
The Edit Ethernet screen appears. Select Enable Interface and Enable IPv6.
2
Select Enable Router Advertisement and click Add and configure a network prefix for the LAN1
(2006:1111:1111:1111::/64 in this example). Click OK.
You have completed the settings on the USG. But if you want to request a network address prefix
from your ISP for your computers on the LAN, you can configure prefix delegation .
1.6.3 Prefix Delegation and Router Advertisement Settings
This example shows how to configure prefix delegation on the USG's WAN and router
advertisement on the LAN.
1.6.3.1 Apply a Network Prefix From Your ISP
First of all, you have to apply a network prefix from your ISP or the uplink router's administrator . The
WAN port's DUID is required when you apply the prefix. You can check the DUID information in the
WAN IPv6 Interface Edit screen.
This example assumes that you were given a network prefix of 2001:b050:2d::/48 and you decide to
divide it and give 2001:b050:2d:1111::/64 to the LAN network. LAN1's IP address is
2001:b050:2d:1111::1/128.
Pure IPv6 Network Example Using Prefix Delegation
Figure 23
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