CGNAT Zero Trust 2
I had a problem with my router and had to configure a new one. Same exrternal ip bu for some reaosn my tinnel isnt working anymore. I checked the settings and there was i cname that i dont recall adding with an ipv6 space.. i deleted it. i cant get connected. can someone offer advice thanks.
22 Replies
Support AI
I'm happy to help you troubleshoot the issue with your Cloudflare Tunnel.
Firstly, I'd like to clarify that the CNAME record you deleted might have been created by Cloudflare Tunnel itself. According to the documentation, "When you create a tunnel, Cloudflare generates a CNAME record that points to the tunnel's UUID" (Source: https://developers.cloudflare.com/cloudflare-one/connections/connect-networks/do-more-with-tunnels/migrate-legacy-tunnels/).
To resolve the issue, I recommend checking the following:
1. Ensure that you have the correct CNAME record set up for your tunnel. You can find the required CNAME record in the Cloudflare Tunnel configuration. (Source: https://developers.cloudflare.com/cloudflare-one/connections/connect-networks/do-more-with-tunnels/migrate-legacy-tunnels/)
2. Verify that the CNAME record points to the correct tunnel UUID. You can find the tunnel UUID in the Cloudflare Tunnel configuration.
3. Check that the tunnel is correctly configured and running. You can use the
cloudflared tunnel list
command to verify the tunnel's status.
4. If you're still experiencing issues, try restarting the tunnel and checking the logs for any errors.
Regarding the IPv6 space, it's possible that the CNAME record you deleted was related to IPv6. However, without more information, it's difficult to say for certain. If you're still experiencing issues, I recommend checking the Cloudflare documentation for more information on configuring IPv6 with Cloudflare Tunnel.
If none of these steps resolve the issue, please provide more details about your configuration and setup, and I'll do my best to assist you further.Sources
This is an AI generated response, it may not be 100% accurate. Please validate the output. You can ask followups by replying to this message or mentioning me.
Does your CNAME record now point to <tunnelid>.cfargotunnel.com?
cfargotunnel.com? i dont think so...

So, did you fix it?^^
no.. im not really sure what cfargotunnel.com is ? i dont think it was like that before
should i enter that in the NAME space?
no
In the target
replace <tunnelid> with the tunnel id
ohhh. so tunnel id is no longer used? i will try it
Yes, the tunnel id is used
How does the record in your screenshot end?
its ONLY the tunnel id
so you want me to put tunnelid.cfargotunnel.com
i want you to put the tunnel id, followed by .cfargotunnel.com
gotcha... hold
still no connect

I get a bad gateway error now rather than an Origin DNS error, so it seems to have fixed the first problem.
hmmm.. so you think my forwarder is bad?
I think the tunnel can't load the resource, so check that the public hostname you configured points to the correct service
embyhome ya mean?
yes, can you make a screenshot of the public hostname configuration?
from dns zone?
no, from the tunnel configuration
thihnk i found it..
yup.. the IP address..i forgot that it was also configd there.. when the server ip changed (ofc i shouldve just put a static on it.
thanks grand puba