DHCP Relay over Route-based VPN

The limitation is documented here: https://docs.sophos.com/nsg/sophos-firewall/18.0/Help/en-us/webhelp/onlinehelp/nsg/sfos/concepts/NetworkDHCP.html?hl=dhcp%2Crelay

Currently no ETA planned for route based DHCP relay. 

Hello LuCar Toni,

I tested the setup with RED-Tunnel between the XG Firewalls. With the RED Tunnel everything works as expected. 
One Question for RED-Tunnel: Can I build redundant Tunnel like the route-based VPN?

Ben

Hi Ben@Network, 

As far as I know, there's no option to build redundant RED tunnels. 

Thanks,

Actually you can. As RED is a Server/Client protocol, you can simply build two different tunnels between each IPs available. The Tunnels would be 24/7 active but only used, if the route is matching. Use Routing like Dynamic routing or static routing + metrics. 

In the future, there will be solutions via SD-WAN (jitter etc.) 

Update: This is supported in SFOSv21.0:  Sophos Firewall v21 Early Access Announcement