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feat: expose DERP_VERIFY_CLIENT_URL_FAIL_OPEN and update docs - #28

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feat: expose DERP_VERIFY_CLIENT_URL_FAIL_OPEN and update docs#28
answork02 wants to merge 1 commit into
kaaanata:mainfrom
answork02:main

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Description

Exposes the DERP_VERIFY_CLIENT_URL_FAIL_OPEN environment variable in the Docker image, allowing users to configure the "fail open" behavior when the client verification URL is unreachable. See tailscale/tailscale#11193.

Changes

  • Dockerfile: Added DERP_VERIFY_CLIENT_URL_FAIL_OPEN with a default value of true.
  • README:

References

Adds support for the `verify-client-url-fail-open` flag introduced in upstream Tailscale.

Changes:
- Dockerfile: Added `DERP_VERIFY_CLIENT_URL_FAIL_OPEN` environment variable (defaults to true).
- README: Documented the new variable and added Headscale integration guide. (tailscale/tailscale#11193)
@answork02 answork02 changed the title feat: expose DERP_VERIFY_CLIENT_URL_FAIL_OPEN and update docsfeat(docker): support DERP_VERIFY_CLIENT_URL_FAIL_OPEN env var feat: expose DERP_VERIFY_CLIENT_URL_FAIL_OPEN and update docs Jan 29, 2026
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