The comment was previously attached to m_addr_known, but now it is attached to id, which is wrong.
This comment would have been moved to the correct place in [[https://github.com/bitcoin/bitcoin/pull/20653 | core#20653]], and then moved again and rephrased in [[https://github.com/bitcoin/bitcoin/pull/21186 | core#21186]] (we added that comment in D10929)
Depends on D18244