raspi-config's do_hostname rewrites the 127.0.1.1 line with
sed "s/127\.0\.1\.1.*$CURRENT_HOSTNAME/127.0.1.1\t$NEW_HOSTNAME/"
which only matches if that line already holds the *old* hostname. Ours
still said "raspberrypi", so the substitution has been silently doing
nothing and the box could not resolve its own hostname.
Set the line explicitly instead, after the hostname is re-read, so a
rename and this update happen in the same run.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Martin Bauer
2443a75871