I have a routerboard with 2 internet providers.
internet provider 1 = natting with private ip-range 192.168.1.0/24
internet provider 2= natting with private ip-range 192.168.2.0/24
How can i prevent that a create a internet uplink from provider 1 to provider 2?
Having 2 WANs in the same 192.168.1.0/24 network looks confusing, are you sure this is what you want to do?
Please post the result of “/ip address print” “/ip route print” “/interface print”
Sorry my mistake, i have edit the message
I understand that you want to block traffic from provider 1 to provider 2 ? Then you can try blocking packets with firewall
/ip firewall filter chain=forward action=reject reject-with=icmp-network-unreachable src-address=192.168.1.0/24 dst-address=192.168.2.0/24
/ip firewall filter chain=forward action=reject reject-with=icmp-network-unreachable src-address=192.168.2.0/24 dst-address=192.168.1.0/24