Is it possible to assign a "static" IP to clients based on the username

Connected Tutorial
This question is a follow-up to this tutorial:

First, love the tutorial, thank you very much. I’d like to always assign the same IP to specific clients, is this possible?

Show comments

Submit an answer

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Sign In or Sign Up to Answer

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Jamon Camisso
DigitalOcean Employee
DigitalOcean Employee badge
November 5, 2020
Accepted Answer

So, following up on previous comments and reading the Strongswan docs on Responder Configuration in a bit more detail, it sounds you can configure clients with static IPs using this setting on the server:


Along with this setting on the client based on the Initiator Configuration option that I mentioned previously:

leftsourceip=<your desired static ip here>

The commentary on the responder section states that:

Alternatively, the responder may define the following to let the client choose an address. This is not recommended if the client is not completely trusted.

Since it sounds like you trust all your clients, try specifying a static IP in the client’s leftsourceip setting. The rightsourceip=%config should ensure that Strongswan will accept the client’s request.

Do note that you’ll need to keep track of which client has which static IP, since Strongswan won’t be keeping track of which is assigned or duplicated.

Sri Charan Madhavapeddi
DigitalOcean Employee
DigitalOcean Employee badge
November 3, 2020


In general, the moment you create a Droplet, you will be assigned an Static IPv4 address automatically. Similarly, when you destroy the Droplet, the IP address will be disassociated and will join the IP pool table. There is no way you can have one more Static IP address to the Droplet or assign/retain the same Static IP on our platform. Really sorry for the inconvenience!

However, you can use the provision of Floating IP on our platform. This allows you to assign one more IPv4 address and can also be moved between Droplets in same account. Refer to below links, which provides some insights on Floating IP:

You can also start using IPv6, request you to refer to below links:

Hope this helps!

Regards, Sri Charan

Try DigitalOcean for free

Click below to sign up and get $200 of credit to try our products over 60 days!

Sign up

Get our biweekly newsletter

Sign up for Infrastructure as a Newsletter.

Hollie's Hub for Good

Working on improving health and education, reducing inequality, and spurring economic growth? We'd like to help.

Become a contributor

Get paid to write technical tutorials and select a tech-focused charity to receive a matching donation.

Welcome to the developer cloud

DigitalOcean makes it simple to launch in the cloud and scale up as you grow — whether you're running one virtual machine or ten thousand.

Learn more
DigitalOcean Cloud Control Panel