tuntap was deprecated by Apple since Apple silicon M1 chip
http://tuntaposx.sourceforge.net/

And when I installed TunnelBlink on my m1 mac, start edge will give blow error:

Looks like I haven't installed tuntap successfully yet 🤷♂️
@AielloChan Tunnelblick has a customed tuntaposx which supports macOS 11.0 and above.
You may install Tunnelblick, copy the .kext file then simply uninstall it. All you need is the signed tap kext file.
Before running edge, you need load the kernel extension via "kextload tuntap.kext".
There is a method you can try from the link: https://omniedge.io/docs/article/install/macoscli#for-m1-mac-user
Fast installation
- Download and install Tunnelblick, install the tun/tap driver with the built-in script.

Slow but clean installation
- Download
https://github.com/Tunnelblick/Tunnelblick/tree/master/third_party/tap-notarized.kext - Download
https://github.com/Tunnelblick/Tunnelblick/tree/master/third_party/tun-notarized.kext - Change the name to tap.kext and tap.kext,
- Copy to /Library/Extensions
- add
net.tunnelblick.tap.plistandnet.tunnelblick.tun.plistto/Library/LaunchDaemons/
#net.tunnelblick.tap.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>net.tunnelblick.tap</string>
<key>ProgramArguments</key>
<array>
<string>/sbin/kextload</string>
<string>/Library/Extensions/tap.kext</string>
</array>
<key>KeepAlive</key>
<false/>
<key>RunAtLoad</key>
<true/>
<key>UserName</key>
<string>root</string>
</dict>
</plist>
#net.tunnelblick.tun.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>net.tunnelblick.tun</string>
<key>ProgramArguments</key>
<array>
<string>/sbin/kextload</string>
<string>/Library/Extensions/tun.kext</string>
</array>
<key>KeepAlive</key>
<false/>
<key>RunAtLoad</key>
<true/>
<key>UserName</key>
<string>root</string>
</dict>
</plist>
- Run
sudo kextload /Library/Extensions/tap.kextin the terminal - restart Mac after allowing the security check.
No more Tun/Tap drivers for using OmniEdge macOS GUI on M1/M2 MacBook !
Download from App Store https://apps.apple.com/us/app/omniedgenew/id1603005893
I use kextload /Library/Extensions/tunnelblick-tap.kext