MikroTik

I am a new user of Mikrotik I want to know about these commands
/ ip firewall mangle
add chain=prerouting dst-address=10.111.0.0/24 action=accept in-interface=LAN
add chain=prerouting dst-address=10.112.0.0/24 action=accept in-interface=LAN


I want to have a deep concept of the command. Please cooperate with me.
you have written something about this but I am not clear.

Hello,

As I understand, these are the first 2 rules in mangle in pcc manual
These rules the only pourpose they have is to dont mark any traffic going to your ISPs networks
When your PCC is working, any connection can be made from any ISP on the PCC, but sometimes, the ISP network only is reached from the same network and arent reachable from outside (I think so)
As those connection wont be marked, will use the default routing table (Those routes wich don't consider routing marks), which should have a route to access those networks.

Regards
Damián