Name:~$ uname -a Linux johannes-System-Product-Name 3.13.0-35-generic #62-Ubuntu SMP Fri Aug 15 01:58:42 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Name:~$ cat /etc/network/interfaces auto lo iface lo inet loopback -Name:~$ cat /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN -Name:~$ cat /etc/hosts 127.0.0.1 localhost 127.0.1.1 johannes-System-Product-Name # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters -Name:~$ ifconfig -a lo Link encap:Lokale Schleife inet Adresse:127.0.0.1 Maske:255.0.0.0 inet6-Adresse: ::1/128 Gültigkeitsbereich:Maschine UP LOOPBACK RUNNING MTU:65536 Metrik:1 RX-Pakete:807 Fehler:0 Verloren:0 Überläufe:0 Fenster:0 TX-Pakete:807 Fehler:0 Verloren:0 Überläufe:0 Träger:0 Kollisionen:0 Sendewarteschlangenlänge:0 RX-Bytes:73339 (73.3 KB) TX-Bytes:73339 (73.3 KB) -Name:~$ iwconfig lo no wireless extensions. -Name:~$ route -n Kernel-IP-Routentabelle Ziel Router Genmask Flags Metric Ref Use Iface -Name:~$ cat /var/lib/NetworkManager/NetworkManager.state [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true -Name:~$ cat /etc/NetworkManager/NetworkManager.conf [main] plugins=ifupdown,keyfile,ofono dns=dnsmasq [ifupdown] managed=false -Name:~$ cat /etc/udev/rules.d/70-persistent-net.rules | egrep -i 'device|sub' -A3 # PCI device 0x10ec:/sys/devices/pci0000:00/0000:00:1c.3/0000:03:00.0 (r8169) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:18:f3:02:df:04", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" -Name:~$ ping -c 2 $(route -n | grep UG | awk {'print $2'}) Usage: ping [-aAbBdDfhLnOqrRUvV] [-c count] [-i interval] [-I interface] [-m mark] [-M pmtudisc_option] [-l preload] [-p pattern] [-Q tos] [-s packetsize] [-S sndbuf] [-t ttl] [-T timestamp_option] [-w deadline] [-W timeout] [hop1 ...] destination -Name:~$ ping -c 2 www.ubuntuusers.de ping: unknown host www.ubuntuusers.de -Name:~$ ping -c 2 213.95.41.11 connect: Network is unreachable