A host with several interfaces has a link-local (fe80::/10, and 169.254/16 on
IPv4) on each, and none of them is ever a peer candidate. Listing them under
"not announced" padded the section with one noise line per interface — most of
the list on a machine with several VPN utuns. They are now filtered out;
loopback and real unannounced addresses are unaffected.
Checks: cargo fmt --all --check and cargo clippy -p tsunagi-cli --all-targets
-D warnings pass; verified by eye against a live `tsunagi status`.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>