oki, back, it was an internal dns error.
background: the /etc/resolv.conf containded a dns server that was only reachable through VPN (my old flat where internet was canceled on 29-06...) funny that it didnt fail the 3 years before. i think the wrong IP was set by dhcp during server installation @ home. im using dns names in local networks too, due to less administrative work on IP changes.
anyways, stupid, corrected.
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