Hi Court,  We're running into the same issue. Umbrella integration in place, DHCP on the MX and DNS on our ADDS.  Cannot get PRT working.    Dit you get this working? Some more you found out?   ... View more

Using mand. DHCP in a lot of VLAN's in our network, experienced major issues. Had to roll back to 18.107.6 as advised by Meraki Support. Upgrading to 18.107.8 also resulted in an unstable network, switches, camera's, AP's no longer coming online. Latest update from support:  "we have an issue with mandatory DHCP on firmware 18.107.7 and above, and it is still unresolved" ... View more

Our company is also in desperate need for this to function. We have this working through ASA but that is the only function of the ASA at the moment since Meraki still doesn't support SAML Groups policies.   ... View more