Hello,
I would ask why DHCP server configured on VLAN interface when DNS Server is configured as this VLAN interface gateway not work?
e.g. I have VLAN subnet 172.16.10.0/24 with dns-server configured as 172.16.10.1 (vlan gateway), I have in in IP-> DNS entry with google 8.8.8.8, 8.8.4.4 dns and allowed DNS remote request - now all my clients getting correct IP VLAN subnet addressess but they not have internet access.
When I change dns-server for LAN gateway (physical interface ether1) then internet works OK.
Is any problem with dns remote request for vlan interfaces?
MY ROS 6.32.3