Attach a reserved IP as an Add-on IP

An Add-on IP is a reserved IP attached to a node or a firewall as a second public address. The resource keeps its own public IP, and you can take the add-on away again without touching the original.

Before you begin

• A reserved IP with the status Available. See Reserve an IP if you do not have one yet.
• A node or a firewall to attach it to. A node must be unlocked.

Attach the IP

1. Open Network > Reserve IP.
2. Open the address’s Actions menu and choose Attach IP.
3. Select Node or Firewall, pick the resource, and click Attach IP.

The status changes to Attached, and the resource’s name appears under Assigned To. On a node, the address is listed on the Network tab with the node’s add-on IPv4 addresses. The node answers on it straight away, with nothing to set up inside the node: ip addr on a Linux node shows it next to the node’s own public IP.

A resource can hold several Add-on IPs; repeat the steps with another reserved IP to add one.

Detach the IP

1. Open Network > Reserve IP.
2. Open the address’s Actions menu and choose Detach IP.
3. In Detach Reserve IP, click Detach IP.

The address leaves the node, and its status goes back to Available. It stays reserved to your account, ready to attach somewhere else.

If Attach IP stays greyed out after you pick a node, the node and the address are on different networks; The IP will not attach has the way round it. To use the address as the node’s main public IP instead, see Attach a reserved IP to a node.