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CBA750B | USER MANUAL Firmware version 5.0
CRADLEPOINT
6in4 Tunnel
The 6in4 tunnel mode utilizes explicit IPv4 tunnel endpoints and encapsulates IPv6 packets using 41 as the specified
protocol type in the IP header. A 6in4 tunnel broker provides a static IPv4 server endpoint, decapsulates packets and
provides routing for both egress and ingress IPv6 packets. Most tunnel brokers provide a facility to request delegated
networks for use through the tunnel.
• Primary IPv6 DNS Server – (optional) Depending on your provider, this may be required. This only takes effect if
the default global DNS setting on the Network Settings → DNS page is "Automatic".
• Additional IPv6 DNS Server – Secondary DNS server.
• Delegated IPv6 Network – (optional) Network available for delegation to LANs. Depending on your provider, this
may be required. Prefixes specified here only take effect if those supplied by the connection are insufficient to
configure your LANs.
• Delegated IPv6 Network – Additional network available for delegation to LANs.
Example Configuration:
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