Guest network (without intranet) get ip from intranet dhcp

[alex_mz]

In router switch off DHCP.
My network:
- Internet plug in WAN
- Intranet plug in Lan1 (this lan have DHCP server)
2 Wi Fi netwrok
- "Normal Wifi" see intranet and get IP from DHCP server located in intranet network
- "Guest WiFI" forbiden access for intranet. And can't get IP from DHCP server located in intranet network.
Please help what rules in ebtables write to access from "Guest WIfi" to intranet DHCP server.
Thanks