[Guide] How Install into OpenWRT without udp2raw ipk file

[euphoria360]

Maybe this guide is for dummies like me, but i spent hours trying to figure out how to install this into OpenWrt v23.05.
My issue was that I couldn't find udp2raw ipk installation file anymore. So here is what I did:

UDP2RAW Installation:

• Get the latest udp2raw release from here
• Inside the tar.gz file, there are lots of binaries for each architecture. choose the one that's for your CPU.
• copy it to your Openwrt (via SCP/SFTP) and chmod +x it. Then test it to see if it runs and is compatible with your CPU.
• copy it to /usr/bin/udp2raw. for example: cp -f /root/udp2raw_arm_asm_aes /usr/bin/udp2raw

luci-app-udp2raw Installation:

• Get luci-app-udp2raw ipk file from here
• but for it to work, First you need to install luci-compat: opkg install luci-compat
• then install the ipk you downloaded like this: opkg install luci-app-udp2raw.ipk
• and finally reboot.

Enjoy.

P.S Because OpenWRT 23.05 and newer versions default to nftables instead of iptables, you cant use udp2raw's default rule adding and it will throw an error and not start. so to fix it uncheck "Auto Rule" in your Server Settings page, and add the rules manually.