[Testing] Missing IPv6 integration tests

[Mossaka]

Priority

Low

Description

The test suite lacks integration tests for IPv6 functionality, which leaves a gap in test coverage for IPv6 filtering and DNS configuration.

Impact

• Severity: Low
• Risk: IPv6 filtering bugs may go undetected
• Coverage Gap: IPv6 scenarios not validated in CI/CD

Proposed Solution

Add integration tests for:

1. IPv6 DNS filtering (default: Google DNS IPv6 addresses)
2. IPv6 traffic blocking when ip6tables is unavailable
3. IPv6 sysctl configuration verification
4. IPv6 address validation in domain patterns

Test Scenarios

# Test IPv6 DNS filtering
awf --dns-servers 2001:4860:4860::8888,2001:4860:4860::8844 'curl https://example.com'

# Test IPv6 traffic blocking
awf --allow-domains example.com 'curl -6 https://ipv6.google.com'

Effort Estimate

~3 hours

References

• Source: Daily Security Review Discussion [Security Review] Daily Security Review - January 16, 2026 #228
• Related: IPv6 filtering gaps issue