Greetings, I am getting an error when trying to connect via Warp Zero Trust.
So far I have tried using the latest version of the Mac OS app on MacOS Ventura 13.2.1, and downloading the beta version. But connecting does not work.
I also tried the following command: $ lsof -i TCP:53 $
Could you please provide guidance to get the app working?
The issue was caused by a Bonjour service binding to port 53 when sharing resources was * enabled. Perhaps as a recommendation it would be great if Cloudflare improves documentation on requirements such as ports required for this app to work. And how to troubleshoot issues. The exact process was ‘_mdnsresponder’ in case it helps anyone. Thanks
Hi @arturo I’m also facing the same issue. Any advice on how to fix this?
I couldn’t stop the mdnsresponder as System Integrity Protection is enabled in my mac.
Hi @mehdinaraghi2015 thanks for the response. Internet sharing is already disabled in my mac.
How can I stop mDNSResponder from binding on port 53?
I tried to disable it but couldn’t do due to system integrity protection enabled. Please advise.
Note: I’m connected to internet via my mobile hotspot.
@kannanaut that’s an interesting one. Try disabling everything in ‘Sharing’ and then:
sudo killall -HUP mDNSResponder
If you have docker or another virtualization software running, try to exit it. ps ax|grep -i docker|egrep -iv 'grep|com.docker.vmnetd'|awk '{print $1}'|xargs kill
Still no luck
I suspect this error has something to do with using mobile hotspot for internet. Because I didn’t encounter this so far when I used wifi.
I can connect while using personal hotspot. It could be different in your case.
Check /etc/resolv.conf and /etc/resolver/ if it exists, look for /etc/resolver/multicast and see if it mentions any ports.
Lastly, /Library/Preferences/com.apple.mDNSResponder.plist
If those don’t give any clues, then I don’t know. Try disabling your launch agents and services (especially virtualization software) and try to pinpoint the cause
Run command: sudo /usr/bin/sudo /usr/bin/defaults write /Library/Preferences/com.apple.mDNSResponder.plist NoMulticastAdvertisements -bool true and reboot can fix issue