pi@raspberrypi:~ $ ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.0.101 netmask 255.255.255.0 broadcast 192.168.0.255
inet6 fe80::e0a:ab87:e066:407f prefixlen 64 scopeid 0x20<link>
ether dc:a6:32:f2:61:93 txqueuelen 1000 (イーサネット)
RX packets 48 bytes 3904 (3.8 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 32 bytes 3766 (3.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

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 1000 (ローカルループバック)
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

pi@raspberrypi:~ $ ping 192.168.0.100
PING 192.168.0.100 (192.168.0.100) 56(84) bytes of data.
64 bytes from 192.168.0.100: icmp_seq=1 ttl=128 time=1.08 ms
64 bytes from 192.168.0.100: icmp_seq=2 ttl=128 time=0.528 ms