[...]
$ sudo ifconfig -a
enp8s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 00:17:42:7a:c8:74 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 16
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Local Loopback)
RX packets 4811 bytes 384593 (375.5 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 4811 bytes 384593 (375.5 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tun0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500
inet 192.168.27.68 netmask 255.255.255.255 destination 212.27.38.253
inet6 fe80::fffe:d16a:8dbb:72cd prefixlen 64 scopeid 0x20<link>
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 100 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 16 bytes 1031 (1.0 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlp32s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.0.5 netmask 255.255.255.0 broadcast 192.168.0.255
inet6 fe80::8ef3:422:1504:638f prefixlen 64 scopeid 0x20<link>
ether 00:21:6a:35:c6:a4 txqueuelen 1000 (Ethernet)
RX packets 246563 bytes 210114507 (200.3 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 185695 bytes 29883060 (28.4 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
et
$ cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
source /etc/network/interfaces.d/*
# The loopback network interface
auto lo
iface lo inet loopback
Tiens, c'est bizarre puisqu'aucune interface n'est configurée ici (par rapport à mon habitude avec Jessie).