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How do I set reverse DNS (RDNS/PTR)?

Please simply open a ticket. Make sure your hostname actually resolves the IP address before requesting a reverse DNS record.
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Can I run Docker on my VPS?

Docker is fully supported for our Linux VPS and Premium VPS plans.It has been enabled by default...

How can I enable TUN/TAP?

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If you see a message like the below when you are trying to connect to your VPS using SSH, it's...

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My VPS is using too much memory. What's wrong?

It probably isn't. You may be reading it incorrectly. Please refer to http://www.linuxatemyram.com/