Oh great…
now nothing runs anymore… I did at my notebook in the Luci -> Network -> Hostnames… now the notebook hostname does get resolved but nothing else… /etc/hosts is now ignored.
I removed that from the hostnames again but still, /etc/hosts still ignored…
Basically - nothing gets resolved on the lan by any hostname.
I mean WTF? Assigning a few statics and have every other device be pingable by their hostname should be something simple…