The button 6rd tunnel opens the configuration for a 6rd tunnel.
Click on Add to create a new tunnel.
You can set the following properties for the tunnel:
- Tunnel name
- Specifies the name of the 6rd tunnel.
- Interface tag
- The interface tag that you enter here is a value that uniquely identifies the network. All packets received on this network are marked internally with this tag. The interface tag enables the routes which are valid for this network to be separated even without explicit firewall rules.
- Border relay address
- This is the IPv4 address of the 6rd border relay.
Note: If this field is left blank, the data is obtained via DHCPv4.
- IPv4 routing tag
- Enter the routing tag for setting the route to the relevant remote gateway.
- Prefix
- The prefix used by the provider for 6rd services, e.g. 2001:db8::/32.
Note: If the 6rd prefix is assigned via DHCPv4 (i.e. the border relay address is empty), this field is ignored or can be left empty.
- IPv4 mask length
- Defines the number of significant bits of IPv4 addresses that are identical within a 6rd domain. For example, if the mask length is 0, then there are no identical bits and the entire IPv4 address is used to generate the delegated 6rd prefix.
The mask length is specified by the provider.
Example: The IPv4 address of the router is 192.168.1.99 (in hexadecimal: c0a8:163). In this case, the following are examples of possible combinations:
Default is 0
6rd domain Mask length 6rd prefix 2001:db8:1::/32 0 2001:db8:1:c0a8:163::/64 2001:db8:1:2::/48 16 2001:db8:1:2:163::/64 2001:db8:1:2:3300::/56 24 2001:db8:1:2:3363::/64 - Firewall active for this tunnel
- If the global IPv6 firewall is enabled, you can enable or disable the firewall for this tunnel interface here. To enable the IPv6 firewall globally, select IPv6 firewall/QoS enabled in the menu .
Important: Disabling the global IPv6 firewall means that the firewall is disabled for all interfaces, even if you enable this option.
