luo jiyin 42796d7086
test: isolate Docker bridge gateway fallback from host DNS (#5107)
* test: isolate Docker bridge gateway fallback from host DNS

Force the fallback-path test to bypass host DNS resolution.

Production bind-host behavior is unchanged.

Refs #5106

* test: document Docker fallback isolation

Explain why the fallback test must replace host DNS resolution.

Refs #5106
2026-08-30 22:24:32 +08:00
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