When removing IP addresses from any type of interface the UI shows an error message and the IP address is not removed.
When an IP address has been set to be used specifically in these configuration areas:
Network - Configuration -
- Link Load Balancing
- Source NAT & LLB rules
- Port forwards
Network - Firewall -
- Firewall rules
- Smoothwall access
The UI will not allow the removal of the IP address.
Please go through the configuration options listed above and remove any explicit configuration using the IP address that needs to be removed. Once the IP is no longer in use by any configuration element above, the IP address can be safely removed.
Please note that VPN and web proxy configuration will also be affected if the IP address has been used in any configuration for those services. While the UI will allow the removal of IP addresses even when used by VPN or web proxy setups, the service may fail to start if set to use a removed IP address. Please go through the configuration for the web proxy, VPN and any other services that could rely on the removed IP address.