7.1.5 IPv6 Settings
The IPv6 (http://en.wikipedia.org/wiki/IPv6) configuration allows you to enable and configure IPv6 for a WAN device. These settings
should be configured in combination with the IPv6 LAN settings (go to Network Settings → Local Networks, select the LAN
under Local IP Networks, and click Edit) to achieve the desired result.
This is a dual-stacked implementation of IPv6, so IPv6 and IPv4 are used alongside each other. If you enable IPv6, the router will
not allow connections via IPv4. When IPv6 is enabled, some router features are no longer supported. These are:
• RADIUS/TACACS+ accounting for wireless clients and admin/CLI login
• IP Passthrough (not needed with IPv6)
• NAT (not needed with IPv6)
• Bounce pages
• UPnP
• Syslog
• SNMP over the WAN (LAN works)
There are two main types of IPv6 WAN connectivity: native (Auto and Static) and tunneling over IPv4 (6to4, 6in4, and 6rd).
• Native – (Auto and Static) The upstream ISP routes IPv6 packets directly.
• IPv6 tunneling – (6to4, 6in4, and 6rd) Each IPv6 packet is encapsulated by the router in an IPv4 packet and routed over an
IPv4 route to a tunnel endpoint that decapsulates it and routes the IPv6 packet natively. The reply is encapsulated by the
tunnel endpoint in an IPv4 packet and routed back over an IPv4 route. Some tunnel modes do not require upstream ISPs to
route or even be aware of IPv6 traffic at all. Some modes are utilized by upstream ISPs to simplify the configuration and
rollout of IPv6.
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