Drush commands report "hostname: Name or service not known"
Drush calls the hostname program to determine if a given fqdn for a remote site alias is actually the localhost.  There appear be other incidental uses for this program, since it is called when you run drush status.

If your system is saying 'name or service unknown', it means that you networking is not completely configured on the host server.  This isn't a Drupal/Drush issue, but see:

http://www.linuxquestions.org/questions/linux-networking-3/ssh-name-or-service-not-known-479307/

If that does not solve your problems, try asking in a SuSe forum.