mtu导致上网异常

通过网关测试mtu值
ping -f -l 1424 112.21.197.81

计算mtu值为1424+28=1452

查看网卡mtu值
netsh interface ipv4 show subinterfaces
修改mtu值-windows
netsh interface ipv4 set subinterface 以太网 mtu=1452 store=persistent
修改mtu值-linux
ifconfig eth0 mtu 1452