Multiple Wan ports and public IP adresses

Hello everybody, I’m Vedran from Croatia.

I’m mikrotik beginner, although I know basics, i have following question:

My Isp gave me 5 public IP adresses, so I create bridge with 5 ether ports, and gave bridge one of the public IP. On the server side, a gave static IP adresses a connect to designated ports in bridge. All publi IPs are in same subnet.

Lan is on port 2, and i created masquerade in NAT throught that bridge interface.

After that, i ocassionaly lose internet connection on my lan clients.
Is the bridge problem?

Thanks in advance, Vedran