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DDNS-GO Usage Guide

What is DDNS​

DDNS (Dynamic DNS) automatically updates a fixed domain name with a device's changing public IP address.

Benefits:

  • You don't need to remember the current public IP
  • The domain stays valid after network reconnections or IP changes
  • Easier for remote access to devices on home or mobile networks

For BliKVM, the main value of DDNS is:

Always reach your device using a fixed domain name instead of looking up its current public IP.

Current solution​

BliKVM currently uses DDNS-GO as the DDNS management tool.

On the UI you'll see:

DDNS settings
  • Use DDNS-GO
  • service status indicator
  • Open Configuration

Enable DDNS-GO in BliKVM and open the DDNS-GO configuration page to complete your domain setup.

Why public IPv6 + DDNS is a good fit for BliKVM​

Many devices lack a public IPv4 but are assigned public IPv6 by ISPs.

In that case, public IPv6 + DDNS is an excellent remote access solution for BliKVM.

Typical scenario​

Assume your BliKVM device:

  • is on a home network
  • has no public IPv4
  • has a public IPv6 that may change

Without DDNS you would need to:

  1. Check the device's current public IPv6
  2. Manually enter the long IPv6 address in your browser

IPv6 addresses are long, hard to remember, and become invalid after changes.

With DDNS-GO:

  1. Assign a domain to the device, for example:
kvm.example.com

  1. DDNS-GO updates that domain to the device's current public IPv6

  2. From then on visit:

https://kvm.example.com

As long as DDNS-GO runs, the domain will point to the new address after IP changes.

When to use​

Enable DDNS-GO when:

  • Your home broadband provides a public IPv6
  • You want a stable domain to access BliKVM

Steps​

1. Open the DDNS page​

Navigate:

Settings -> Remote Access -> DDNS

2. Enable DDNS-GO​

Toggle:

Use DDNS-GO

The page shows the service status after enabling.

3. Open the configuration UI​

When the service is running, click:

Open Configuration

This opens the native DDNS-GO configuration page.

4. Configure your DNS provider in DDNS-GO​

Enter provider-specific information, for example:

  • domain
  • subdomain/host record
  • access key / token
  • record type

5. Access BliKVM via the domain​

After a successful setup you can reach BliKVM using your domain instead of the raw IP.

Example​

  • Device uses a non-static public IPv6
  • Example domain: blikvm.cloud
  • The example API used in tests is Tencent Cloud's free API (requires a personal Tencent Cloud account)

Configure DDNS-GO similar to:

DDNS main settings

After configuration, open the logs after a few seconds to see success:

DDNS success log

Then simply visit:

https://blikvm.cloud

Will settings be lost after an upgrade?​

No.

DDNS-GO saves its configuration in the device data directory. Normal upgrades retain the configuration and enabled state, so reconfiguration is generally not needed after upgrades.

Common checks​

If the domain does not work, check:

1. Service enabled​

Confirm Use DDNS-GO is turned on in the BliKVM UI.

2. Service running​

The UI should show the service status and display Open Configuration.

3. DNS record updated​

Query your domain to verify it resolves to the current public IPv6.

4. IPv6 connectivity from the client​

Even if the device has a public IPv6, the client network must also support IPv6 to connect.

Recommendation​

If your BliKVM's network supports public IPv6, prefer:

Public IPv6 + DDNS-GO + fixed domain

It is simple, reliable, and suited for long-term remote access — ideal for home management and remote device access when no public IPv4 is available.