Hi all!
First, I'm quite new with RouterOS, but have a relatively good understanding of networking stuff. My problem is the following:
The WISP I'm working at is changing the connection type of the customers with a public IP from just having the static IP address on the WAN port to PPPoE for various reasons. Everything went fine, except for an RB750GL. The PPPoE tunnel works fine, but when I open the IP address list, the network of the PPPoE interface is 192.168.5.3, however the IP address is 178.23.xxx.xxx. Also, in the route list there is a dynamic route to destination address 192.168.5.3 through pppoe-out1, and it says it's reachable, but there is no such device on the client's internal network, I know that for sure.
Btw, the client's internal network is 192.168.5.0/24 and the ether2 port is set up to have this IP address 192.168.5.1, there's a DHCP server set up with a pool from 192.168.5.150 to 254.
There are no other DHCP servers on the network.
From where did the router get to the IP address 192.168.5.3? How can I get rid of it? (preferably remotely, so resetting might not be an option) Any helpful answer is really appreciated.