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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
2026-02-06 12:43:53 +00:00
parent d6cb78aeb4
commit 9388e7f48c
254 changed files with 80 additions and 49676 deletions
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component-tests/test_management.py
+4 -4
View File
@@ -25,7 +25,7 @@ class TestManagement:
# Skipping this test for windows for now and will address it as part of tun-7377
if platform.system() == "Windows":
return
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)
headers = {}
headers["Content-Type"] = "application/json"
@@ -52,7 +52,7 @@ class TestManagement:
# Skipping this test for windows for now and will address it as part of tun-7377
if platform.system() == "Windows":
return
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_pre_args=["tunnel", "--ha-connections", "1"], new_process=True):
@@ -73,7 +73,7 @@ class TestManagement:
# Skipping this test for windows for now and will address it as part of tun-7377
if platform.system() == "Windows":
return
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_pre_args=["tunnel", "--ha-connections", "1"], new_process=True):
@@ -94,7 +94,7 @@ class TestManagement:
# Skipping this test for windows for now and will address it as part of tun-7377
if platform.system() == "Windows":
return
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_pre_args=["tunnel", "--ha-connections", "1", "--management-diagnostics=false"], new_process=True):