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fix: ignore IPv6 link-local addresses #2865

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merged 2 commits into from
Nov 29, 2024

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Network interfaces generate their own link-local addresses when bootstrapping to the network. With IPv4 these are discarded when a DHCP server assigns an address but IPv6 interfaces keep them around.

These aren't useful addresses after a routable address has been assigned so do not return them as addresses we are listening on.

Change checklist

  • I have performed a self-review of my own code
  • I have made corresponding changes to the documentation if necessary (this includes comments as well)
  • I have added tests that prove my fix is effective or that my feature works

Network interfaces generate their own link-local addresses when
bootstrapping to the network.  With IPv4 these are discarded when
a DHCP server assigns an address but IPv6 interfaces keep them
around.

These aren't useful addresses after a routable address has been
assigned so do not return them as addresses we are listening on.
@achingbrain achingbrain requested a review from a team as a code owner November 29, 2024 18:13
@achingbrain achingbrain changed the title fix: ignore link-local addresses fix: ignore IPv6 link-local addresses Nov 29, 2024
@achingbrain achingbrain merged commit f8da60e into main Nov 29, 2024
34 of 35 checks passed
@achingbrain achingbrain deleted the fix/ignore-link-local-addresses branch November 29, 2024 19:30
@achingbrain achingbrain mentioned this pull request Nov 29, 2024
acul71 pushed a commit to acul71/js-libp2p-fork that referenced this pull request Dec 1, 2024
Network interfaces generate their own link-local addresses when
bootstrapping to the network.  With IPv4 these are discarded when
a DHCP server assigns an address but IPv6 interfaces keep them
around.

These aren't useful addresses after a routable address has been
assigned so do not return them as addresses we are listening on.
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