🐛Cloudflared service works fine on Debian 12, but not Fedora 38

[Boris Shor]

Update

This bug report below is my fault, or rather, the fault of Tailscale, which overwrote /etc/resolv.conf for me (since DNS settings are inherited from the host, which has tailscale installed). Why this affected Fedora and not Debian, not sure. But once these steps from Tailscale are executed, everything worked again.

Describe the bug

I have absolutely new installations of Fedora 38 and Debian 12 into LXC containers within the Proxmox VE 8 (latest). I am unable to install the cloudflared service in the context of creating new (test) tunnels in Fedora, while in Debian it works perfectly.

To Reproduce
Steps to reproduce the behavior:

1. Create LXC container within Proxmox VE. It has built in templates for new installations of popular distros, like Debian and Fedora.
2. Create a (test) tunnel within the Cloudflare Tunnel Web UI.
3. Use the correct command for the distribution.
4. In Debian, the service installs instantly:

2023-09-11T15:11:48Z INF Using Systemd
2023-09-11T15:11:48Z INF Linux service for cloudflared installed successfully

In Fedora, service installation times out:

2023-09-11T15:12:56Z INF Using Systemd
systemctl [start cloudflared.service] returned with error code exit status 1 due to: Job for cloudflared.service failed because the control process exited with error code.
See "systemctl status cloudflared.service" and "journalctl -xeu cloudflared.service" for details.

If it's an issue with Cloudflare Tunnel:
6. Tunnel ID : eb5f04b4-9f86-4f2a-bf2b-d4c7947e540a
7. cloudflared config: Not sure what this means. I am installing cloudflared from scratch. I'm a single user.

Expected behavior
A clear and concise description of what you expected to happen.

The same easy installation in Fedora that I see in Debian

Environment and versions

• OS: Linux test-f 6.2.16-12-pve #1 SMP PREEMPT_DYNAMIC PMX 6.2.16-12 (2023-09-04T13:21Z) x86_64 GNU/Linux
• Architecture: AMD Ryzen 3700X
• Version: 2023.8.2

Logs and errors
journalctl reveals:

Sep 11 15:19:18 test-f systemd[1]: Starting cloudflared.service - cloudflared...
░░ Subject: A start job for unit cloudflared.service has begun execution
░░ Defined-By: systemd
░░ Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
░░ 
░░ A start job for unit cloudflared.service has begun execution.
░░ 
░░ The job identifier is 8050.
Sep 11 15:19:18 test-f cloudflared[7577]: 2023-09-11T15:19:18Z INF Starting tunnel tunnelID=eb5f04b4-9f86-4f2a-bf2b-d4c7947e540a
Sep 11 15:19:18 test-f cloudflared[7577]: 2023-09-11T15:19:18Z INF Version 2023.8.2
Sep 11 15:19:18 test-f cloudflared[7577]: 2023-09-11T15:19:18Z INF GOOS: linux, GOVersion: go1.20.6, GoArch: amd64
Sep 11 15:19:18 test-f cloudflared[7577]: 2023-09-11T15:19:18Z INF Settings: map[no-autoupdate:true token:*****]
Sep 11 15:19:18 test-f cloudflared[7577]: 2023-09-11T15:19:18Z INF cloudflared will not automatically update if installed by a package ma>
Sep 11 15:19:18 test-f cloudflared[7577]: 2023-09-11T15:19:18Z INF Generated Connector ID: 7e388eac-1687-4fe8-8a0e-fdd9dbbeb07a
Sep 11 15:19:28 test-f cloudflared[7577]: 2023-09-11T15:19:28Z ERR Failed to fetch features, default to disable error="lookup cfd-feature>
Sep 11 15:19:38 test-f cloudflared[7577]: 2023-09-11T15:19:38Z ERR update check failed error="Get \"https://update.argotunnel.com?arch=am>
Sep 11 15:19:48 test-f cloudflared[7577]: 2023-09-11T15:19:48Z WRN Unable to lookup protocol percentage.
Sep 11 15:19:48 test-f cloudflared[7577]: 2023-09-11T15:19:48Z INF Initial protocol quic
Sep 11 15:19:48 test-f cloudflared[7577]: 2023-09-11T15:19:48Z INF ICMP proxy will use 192.168.68.106 as source for IPv4
Sep 11 15:19:48 test-f cloudflared[7577]: 2023-09-11T15:19:48Z INF ICMP proxy will use fe80::3c0a:9cff:feb2:fc0b in zone eth0 as source f>
Sep 11 15:20:18 test-f cloudflared[7577]: 2023-09-11T15:20:18Z INF Starting metrics server on 127.0.0.1:36419/metrics

Additional context
SELinux is disabled so that can't be an issue.

Note that in this install of Fedora I had added the cloudflare Fedora repo and installed using dnf. I have replicated the problem without using the package manager and just copying and pasting the command which uses curl to download the latest rpm package and installs that.