shota-0129 8b2cbe3f86 feat: Add Docker DNS protection to firewall script ...

- Extract Docker DNS NAT ports before iptables cleanup
- Restore Docker DNS NAT rules after iptables reset
- Maintains Docker container DNS functionality in network isolation
- Fixes connection refused errors to 127.0.0.11 in Docker environments

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Co-Authored-By: Claude <noreply@anthropic.com>

2025-07-29 13:54:29 +09:00

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