DNS resolves to OpenVPN transfer net IP

Networking
1

Hello,

I have a small issue. Any time a device logs on to the firewall via OpenVPN internal DNS resolution for that device fails. Let me give an example:

Laptop1 is at home, logging into the VPN in the office. All fine.

Next day laptop1 is in the office. A user wants to remote into laptop1 but instead of the internal IP that has been given by DHCP of the domain controller, the firewall replies with the VPN transfer net address from the day before. This happens only occasionally.

There are DNS forwarding for the local domain “customer.local” set in the IPFire but even a DNS lookup with “laptop1.customer.local” results in a reply with the VPN address.

Am I missing something? Or is this just a “it is what it is” situation?

Any input welcome :slight_smile:

2

You can use the firewall as your DNS server and I think that is probably what you would prefer the most anyways. It would never automatically hand out any IP address of the transfer network because that network is not used for anything else but that.

You might either have re-used a subnet somewhere, or you have configured a static host entry.