How Linux manually views and modifies the MTU value

The default Android system does not have busybox, so you cannot use BusyBox ifconfig to view the modified MTU value. In fact, the MTU value of the NIC is saved in the/sys/class/net/eth0/mtu file, so you can view and modify the file to achieve the purpose of modifying the MTU:

The following is an example of viewing and modifying eth0:

1. View the MTU value

# CAT/SYS/CLASS/NET/ETH0/MTU

2. Modify the MTU value

# echo "1460" >/sys/class/net/eth0/mtu

By the way, in the/sys/class/net/eth0/directory there are many files, corresponding to the eth0 parameters, you can manually modify the value of the inside to configure the network card parameters to achieve the purpose.

How Linux manually views and modifies the MTU value