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It specifies the user name and password assigned by peer L2TP server.
Optional. If a special service name is specified on peer L2TP server, it can be entered
here. If not, leave it blank.
It specifies the authentication method of the L2TP VPN connection.
It specifies the maximum transmission unit size. The default setting is recommended.
Step 4 Select default gateway interfaces from the Available Routed WAN Interfaces, and click
to move it to the Select Default Gateway Interfaces box, and then click Next.
Step 5 Select DNS server interfaces from the Available WAN Interfaces, and click to move
it to the Select DNS Server Interfaces box.
If your ISP provides DNS address(es), select Use the following Static DNS IP address, and
enter it/them.