CCR1036 SOURCE NAT FAIL after 10-20sec

Hi All,

I am looking for some insight.

(will post the config tonight once I get home, if needed)

My problem is that I have a ccr1036 that in its current configuration, source nat will fail at 10-20 seconds after enabling the rule or rebooting the router.

for nat it’s something like

/ip firewall nat add chain=srcnat action=masquerade out-interface=Eth1

On my other ethernet interfaces I have various subnets & dhcp servers & pools.
(10.10.1.0/23, 10.10.10.0/24, 10.10.20.0/24, 10.10.30.0/24, 10.10.40.0/24)

Anyway.. It all works normally for 10-20 seconds, I can ping / browse websites from my laptop thats connected. But then all of the sudden it stops and I cannot ping out from winbox via the Eth1 interface, external connectivity stops. BUT as soon as I disable NAT, I can! Re-enable NAT & it breaks again after 10-20 seconds.

I’m at a loss. Am I doing NAT incorrectly? Is there a better way for me to do NAT?

Thank you very kindly for any input. This is making me go crazy. :\

Anybody have any insight why NAT would just stop working after 10-20 seconds? :\ Please.

Ok I’m still having this issue… is there a different way to perform NAT rather than specifying source nat on the wan port & selecting masquerade?