一、ping 网关
ping 10.0.0.254
ping: sendto: Host is down
ping: sendto: Host is down
Request timeout for icmp_seq 0
ping: sendto: Host is down
Request timeout for icmp_seq 1
ping: sendto: Host is down
Request timeout for icmp_seq 2
ping: sendto: Host is down
Request timeout for icmp_seq 3
ping: sendto: Host is down
Request timeout for icmp_seq 4
二、执行arp
或者执行arp -a出现如下情况
? (10.0.0.15) at 0:e0:4d:3b:a3:9a on en6 ifscope permanent [ethernet]
? (10.0.0.254) at (incomplete) on en6 ifscope [ethernet]
? (169.254.122.20) at 70:4d:7b:27:73:72 on en6 [ethernet]
? (224.0.0.251) at 1:0:5e:0:0:fb on en6 ifscope permanent [ethernet]
? (239.255.255.250) at 1:0:5e:7f:ff:fa on en6 ifscope permanent [ethernet]
解决方法如下：
重新绑定网关mac地址
arp -a
sudo arp -s 10.0.0.254 f0:10:90:71:fd:42
