A collision between the Management object's IP address and the routing.
Both Management and Log server communicate over the X.X.X.X network even though the SIC with the Management's IP uses the Y.Y.Y.Y network.
DBsync first communicates with the IP that is declared in ICAIP since this is the IP that the sic established with. (Y.Y.Y.Y).
Since both servers communicate over the other IP ( X.X.X.X ) - the DBsync between the servers fails.