First of all, please go to
the FAQ (http://www.planetddns.com/index.php/faq) for how to register a free account.
To select DNS > Dynamic DDNS
Step 1. Press Add button
Step 2. Select Planet DDNS
http://www.planetddns.com
User Manual of VDR-300NU
Appendix A: Planet DDNS
to register a Planet DDNS account, and refer to
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