i suggest you to go to
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and to create a static link (adress) toward your dynamic ip.
Register and create that dynamic adress, then download their program here
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<<WIN32
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<<Linux
at each startup or disconnection of your connection, the program will tell the site your new ip and will automatically make a link with the static ip you created.
then put the "static" adress you created as the server ip in your L2.ini
For more information:
"No-IP Free offers an easier way for others to locate you on the Internet. If you want to serve web pages, share MP3s, host Quake, or run any kind of Internet server, you need a name so your users can find you. It's simple. You choose a name for your computer and we tell the world where your computer is located. Even better, we also provide you with a program that notifies us whenever your computer's IP address changes. Instead of being just a number on the Internet, your server is now always available by the same easy-to-remember name"
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I hope it helped you
Good luck