I haven't tried any of this, the furthest i got was plugging the M20 into the MicroTik, should i try to create a subnet just for the M20. And if so how would i do that.Does the M20 have the appropriate default route pointing to the MT?
Is the problem with IP subnets on the M20 not getting out? If so, then does the MT have routes for these subnets pointing back to the M20?
No, i wanted the M20 to be its own independent router who's WAN is the Microtiks LAN. The only problem is that the M20 will no consider the Microtiks LAN a WAN. To clarify i want the M20 to seem like a normal computer siting on the LAN, when its actually a routerThe M20 running DD-WRT .... do you want that to be a wireless access point only? Then I suspect DD-WRT has an option to place it in Bridge Mode. Then give it a static IP address / gateway / DNS ... and you are done.
yea the the M20's LAN subnet is 192.168.1.X and the microtik is 192.168.88.X. the microtik is setup to be a DHCP server, but the M20 does not say that the LAN IP given to the M20 is a WAN IP. it just says 0.0.0.0.First of all make sure that mikrotik's LAN IP subnet (M20's WAN) does not overlap M20's LAN IP subnet. E.g. if your LAN has IP subnet 192.168.88.0/24, then Mikrotik's LAN should have something else, such as 192.168.188.0/24.
Secondly, beware of the method of connecting to internet through Modem. If it's not simple "obtain WAN address using DHCP client" (e.g. it is PPPoE), then you'll have to reconfigure M20 ... it should configure its WAN interface by "obtain WAN address using DHCP client" ... and make sure Mikrotik is set to correct method of configuring its WAN (it should be the same as at M20 when Mikrotik is not between M20 and modem).
There's your problem. Check configuration on M20 and verify it can receive IP address via DHCP from mikrotik.the microtik is setup to be a DHCP server, but the M20 does not say that the LAN IP given to the M20 is a WAN IP. it just says 0.0.0.0.