樹莓派 網路不能用 解法

我的樹莓派 網路 突然不能用
摻考網路

restart network service 就 ok 了

pi@raspberrypi4:~ $ sudo mii-tool -r eth0
restarting autonegotiation...
pi@raspberrypi4:~ $ ping 192.168.1.90
connect: Network is unreachable

Restarting the network fixed things for now.

pi@raspberrypi4:~ $ sudo service networking restart
pi@raspberrypi4:~ $ ping 192.168.1.90
PING 192.168.1.90 (192.168.1.90) 56(84) bytes of data.
64 bytes from 192.168.1.90: icmp_seq=1 ttl=64 time=0.891 ms
64 bytes from 192.168.1.90: icmp_seq=2 ttl=64 time=0.466 ms