Tcpdump capturing Ethernet frames

查看arp协议

sudo tcpdump -e -n -i eth0 ether proto arp

十六进制查看

sudo tcpdump -e -n -x

route add -net 119.29.29.29 netmask 255.255.255.255 dev vboxnet1

route add default gw 192.168.1.1 dev eth1