zones << "debian.org"
zones << "debian.net"
zones << "debian.com"
+zones << "debian.ch"
zones << "debian.es"
zones << "debian.eu"
zones << "debian.li"
zones << "debian.us"
zones << "debian.org.tw"
-zones << "debconf13.ch"
zones << "debian-ports.org"
# debian rack with sil.at