It's not possible to use DHCP-relay agent over OpenVPN(L3/vtun) uplink beause of ISC DHCP-relay agent limitations/bug.
If I use the DHCP-relay it's necessary to define the LAN and the uplink to DHCP server. But with OpenVPN it's not possible because the TUN interface has no MAC address.
Are where any workarounds for this configuration?
The tools dns-masq(>version 2.67) and dhcp-helper from Simon Kelley use only one interface for dhcp-relay function.
Are where any plans to switch to this packages in vyos?