networking - Connection problem with ethernet - Ask Ubuntu


i have installed ubuntu server 16.04 , trying connect network ethernet can't work. still new ubuntu server.

this how interfaces file looks like, (enp3s0 ehternet port , added file).

**# loopback network interface auto lo iface lo inet loopback #ethernet auto enp3s0 iface enp3s0 inet dhcp**

below result of ifconfig:

**enp3s0  link encap: ethernet  hwaddr 00:1f:16:ac:10:fd         inet6 addr: fe80: :21f:16ff:feac:10fd/64 scope: link         broadcast running multicast mtu: 1500 metric: 1         rx packets: 426 errors: 0 dropped: 102 overruns: 0 frame: 0         tx packets: 240 errors: 0 dropped: 0 overruns: 0 carrier: 0         collisions: 0 txqueuelen: 1000         rx bytes: 27876 (27.8 kb) tx bytes: 80952 (80.9 kb)         interrupt: 16   lo     link encap: local loopback        inet addr: 127.0.0.1 mask:255.0.0.0        inet6 addr: ::1/128 scope:255.0.0.0        looback running mtu:65536 metric:1        rx packets:26160  errors: 0 dropped: 0 overruns: 0 frame: 0        tx packets:26160 errors: 0 dropped: 0 overruns: 0 carrier: 0        collisions: 0 txqueuelen: 1        rx bytes: 1936576 (1.9 mb) tx bytes: 1936576 (1.9 mb)**

the result of iwconfig below:

**enp3s0  no wireless exstensions. lo no wireless extensions**

if try ping router says

connect: network unreachable

i don't know do.

thanks help.


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