Websites / Public IP of BGP Neighbor not reachable when FRR turned on

[MrSliff]

Hello together,

i have set up a basic BGP setup between my 3 private "Sites" over Wireguard. The 3 Sites consist of my Home network (pfsense), the Network of my 2nd Appartement (DD-WRT) and the Network on my Cloud provider (pfsense) which hosts some websites and a Teamspeak server.
The center of those Networks is my Home Network, since the DD-WRT Router can only have one Wireguard and one Neighbor connection. Besides that the routes to the DD-WRT are not redistributed to the Cloud pfsense over my Home pfsense, everything locally works fine.

But i ran into another problem, which i could not figure out yet: With BGP enabled between my Home pfSense and the cloud pfSense, i am not able to reach the public ip of my Cloud pfSense anymore. When i traceroute to the domains it only goes to my local gateway and then i get a "Destination Host not reachable" error.

I could not figure out the problem yet, so im asking here.

One of my assumptions is that it could be, that the traffic goes out of my Home pfSense WAN interface, hits the Cloud pfSense and the Server behind it, and the Server or the cloud pfSense may be sending the traffic back through the local route, instead of sending it back through the WAN interface of the Cloud pfSense.

Any thoughts on this is thankfully appreciated :)