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🐛Quick Tunnel will ALWAYS use QUIC protocol instead of auto

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Assessment

Difficulty
1/5
Estimated time
Under an hour
Newbie friendliness
68/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Stale
Tech stack
go
Domain
cli, networking

Research direction

Start at cmd/cloudflared/tunnel/quick_tunnel.go lines 86-88 and inspect how the quick-tunnel protocol default is set. Run cloudflared tunnel --url http://127.0.0.1 to observe the current behavior. Done means quick tunnels use auto as the default protocol instead of QUIC.

Written by the indexing model from the issue text.

Description

Priority: Normal Type: Bug

Describe the bug
Quick tunnel's default protocol has been set to QUIC instead of auto.

To Reproduce
Run cloudflared tunnel --url http://127.0.0.1

Expected behavior
Use auto as default protocol
https://developers.cloudflare.com/cloudflare-one/networks/connectors/cloudflare-tunnel/configure-tunnels/run-parameters/#protocol

Environment and versions

  • Version: 2026.3.0

Additional context
https://github.com/cloudflare/cloudflared/blob/d2a87e9b93456ad7f82417400f4209d513668487/cmd/cloudflared/tunnel/quick_tunnel.go#L86-L88

Dominant language
Go
Stars
16k
Forks
1.5k
No merged PRs in 30d

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