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This series looks like a fix, but its > > commit messages seem to be missing some information: > > > > - How the issue was discovered, e.g. hit in production, hit during > > development, syzbot report, manual code inspection, LLM or static > > analysis tool scan. > > Hit during development of ifupdown2. > > > - Whether the issue was actually triggered, or is only theoretical > > (e.g. found by code inspection). If it was triggered please include > > the symptoms, like the stack trace or error messages. > > Can actually be triggered. > Check with `ip montor netconf` running and execute e.g. > `sysctl -w net.ipv6.conf..force_forwarding=1`. The state of the > force_forwarding property is not returned Are you using a modified iproute2? I don't see "force_forwarding" there.