Currently UDP Broadcast Replay in use does not support much for pushing broadcasts to other network interfaces.

Below is an improved version of UDP Broadcast Replay named udp-proxy-2020.

Has the same functions as udp-broadcast-replay.

https://github.com/synfinatic/udp-proxy-2020

Commands:

Currently there are only a few flags you probaly need to worry about:

--interface -- Specify two or more network interfaces to listen on.
--port -- Specify one or more UDP ports to monitor.
--level -- Specify the log level: [trace|debug|warn|info|error]
Advanced options:

--fixed-ip -- Hardcode an @ to always send traffic to. Useful for things like OpenVPN in site-to-site mode.
--timeout -- Number of ms for pcap timeout value. (default is 250ms)
--cache-ttl -- Number of minutes to cache IPs for. (default is 180min / 3hrs) This value may need to be increased if you have problems passing traffic to clients on OpenVPN tunnels if you can't use --fixed-ip because clients don't have a fixed ip.
--no-listen -- Do not listen on the specified UDP port(s) to avoid conflicts
--deliver-local -- Deliver packets locally on loopback interface
There are other flags of course, run ./udp-proxy-2020 --help for a full list.

Support more network interfaces:
Ethernet
WiFi interfaces which appear as Ethernet
tun interfaces, like those used by OpenVPN
raw interfaces, like those used by Wireguard
vti interfaces for site-to-site IPSec

Note that L2TP VPN tunnels on Linux are not compatible with udp-proxy-2020 because the Linux kernel exposes those as Linux SLL which does not provide an accurate decode of the packets.