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TUN-9858: Remove proxy-dns feature from cloudflared

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Remove the DNS over HTTPS (DoH) proxy feature built on CoreDNS due to
security vulnerabilities (GO-2025-3942, GO-2026-4289).

This removes:
- Standalone proxy-dns command (cloudflared proxy-dns)
- Tunnel subcommand (cloudflared tunnel proxy-dns)
- Proxy-dns flags for tunnel run (--proxy-dns, --proxy-dns-port, etc.)
- Config file resolver section support
- tunneldns/ package (CoreDNS-based implementation)
- Related component tests

BREAKING CHANGE: The proxy-dns feature is no longer available.
Users should migrate to alternative DNS over HTTPS solutions.
This commit is contained in:
João "Pisco" Fernandes
2026-02-02 18:01:55 +00:00
parent d6cb78aeb4
commit 9388e7f48c
254 changed files with 80 additions and 49676 deletions
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10
component-tests/test_tail.py
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@@ -19,7 +19,7 @@ class TestTail:
with the access token and start and stop streaming on-demand.
"""
print("test_start_stop_streaming")
config = component_tests_config(cfd_mode=CfdModes.NAMED, run_proxy_dns=False, provide_ingress=False)
config = component_tests_config(cfd_mode=CfdModes.NAMED, provide_ingress=False)
LOGGER.debug(config)
config_path = write_config(tmp_path, config.full_config)
with start_cloudflared(tmp_path, config, cfd_args=["run", "--hello-world"], new_process=True):
@@ -38,7 +38,7 @@ class TestTail:
Validates that a streaming logs connection will stream logs
"""
print("test_streaming_logs")
config = component_tests_config(cfd_mode=CfdModes.NAMED, run_proxy_dns=False, provide_ingress=False)
config = component_tests_config(cfd_mode=CfdModes.NAMED, provide_ingress=False)
LOGGER.debug(config)
config_path = write_config(tmp_path, config.full_config)
with start_cloudflared(tmp_path, config, cfd_args=["run", "--hello-world"], new_process=True):
@@ -65,7 +65,7 @@ class TestTail:
but not http when filters applied.
"""
print("test_streaming_logs_filters")
config = component_tests_config(cfd_mode=CfdModes.NAMED, run_proxy_dns=False, provide_ingress=False)
config = component_tests_config(cfd_mode=CfdModes.NAMED, provide_ingress=False)
LOGGER.debug(config)
config_path = write_config(tmp_path, config.full_config)
with start_cloudflared(tmp_path, config, cfd_args=["run", "--hello-world"], new_process=True):
@@ -92,7 +92,7 @@ class TestTail:
Validates that a streaming logs connection will stream logs with sampling.
"""
print("test_streaming_logs_sampling")
config = component_tests_config(cfd_mode=CfdModes.NAMED, run_proxy_dns=False, provide_ingress=False)
config = component_tests_config(cfd_mode=CfdModes.NAMED, provide_ingress=False)
LOGGER.debug(config)
config_path = write_config(tmp_path, config.full_config)
with start_cloudflared(tmp_path, config, cfd_args=["run", "--hello-world"], new_process=True):
@@ -120,7 +120,7 @@ class TestTail:
Validates that a streaming logs session can be overriden by the same actor
"""
print("test_streaming_logs_actor_override")
config = component_tests_config(cfd_mode=CfdModes.NAMED, run_proxy_dns=False, provide_ingress=False)
config = component_tests_config(cfd_mode=CfdModes.NAMED, provide_ingress=False)
LOGGER.debug(config)
config_path = write_config(tmp_path, config.full_config)
with start_cloudflared(tmp_path, config, cfd_args=["run", "--hello-world"], new_process=True):