unable to ping routers ip locally after implementing Nth load balancing

RouterOS General
1

hello everyone.
recently I’ve implemented the Nth method of load balancing with 3 WANs. everything working fine except I’m unable to ping my routers IP locally. however, ping from outside my network is working fine.
I’m guessing something in my mangle rule is blocking the ICMP locally. can anyone help me with this? implemented mangle rules are shared below.

add action=mark-connection chain=prerouting connection-state=new in-interf
LanBridge new-connection-mark=conn1 nth=3,1 passthrough=yes
add action=mark-routing chain=prerouting connection-mark=conn1 in-interfac
LanBridge new-routing-mark=conn1 passthrough=no
add action=mark-connection chain=prerouting connection-state=new in-interf
LanBridge new-connection-mark=conn2 nth=3,2 passthrough=yes
add action=mark-routing chain=prerouting connection-mark=conn2 in-interfac
LanBridge new-routing-mark=conn2 passthrough=no
add action=mark-connection chain=prerouting connection-state=new in-interf
LanBridge new-connection-mark=conn3 nth=3,3 passthrough=yes
add action=mark-routing chain=prerouting connection-mark=conn3 in-interfac
LanBridge new-routing-mark=conn3 passthrough=no

2

You mark all new connections from LanBridge and routing for them, so if your routing tables conn1-3 have only defalt route to internet, posted mangle rules would effectively block access to e.g. other local subnets (traffic would go to internet instead). But router itself shouldn’t be affected by this, because when destination address is local, it always has priority and packets will reach the router. And responses would be ok too, because you mark routing only for packets matching in-interface=LanBridge, so they wouldn’t be affected.

The problem with other subnets could be solved either by excluding them from mangle rules, or using routing rule (where 192.168.0.0/16 covers local subnet(s)):

/ip route rule
add action=lookup-only-in-table dst-address=192.168.0.0/16 table=main

But if I undertand your description correctly (maybe not), it won’t make a difference.