Microtik router, NAT and online games

RouterOS General
1

We manage several apartment complexes and we have installed a Mikrotik CCR1016-12G router at our newest one. We have around 200 units and 5 public IP addresses. We are working with the apartment complex trying to get more public addresses. We have the issue that online gaming is not working. This was working previously with a Cisco router. We have enabled UPnP and tried different firewall settings but have not had any luck. Does anyone have any ideas?

IP addresses have been scrubbed

[admin@MikroTik] /ip firewall nat> print
Flags: X - disabled, I - invalid, D - dynamic
0 chain=srcnat action=src-nat to-addresses=1.2.3.4-1.2.3.8 src-address=192.168.100.0/24 out-interface=ether2

1 chain=srcnat action=src-nat to-addresses=1.2.3.4-1.2.3.8 src-address=192.168.101.0/24 out-interface=ether2

[admin@MikroTik] /ip firewall filter> print
Flags: X - disabled, I - invalid, D - dynamic
0 chain=input action=accept connection-state=related

1 chain=input action=accept connection-state=established

2 chain=forward action=accept

3 chain=input action=accept

4 chain=output action=accept

2

Is it just online gaming or is things like online banking not working as well? The issue could be that these sites expect the same IP address for the duration of the connection. to do just that try:

/ip firewall nat
add action=same chain=srcnat comment= disabled=no same-not-by-dst=no 
src-address=192.168.100.0/24 to-addresses=1.2.3.4-1.2.3.8 out-interface=ether2

add action=same chain=srcnat comment= disabled=no same-not-by-dst=no 
src-address=192.168.101.0/24 to-addresses=1.2.3.4-1.2.3.8 out-interface=ether2
3

The above rule did not work but I think we was on the right track. We ended up dedicating a public IP address per building and everything started working. Thanks for the help.