How to manually view and modify MTU values in Linux

Busybox is not included in the default Android system, so you cannot use busybox ifconfig to view and modify MTU values. In fact, the MTU value of the NIC is saved in the/sys/class/NET/eth0/MTU file. Therefore, you can modify the MTU by viewing and modifying the file:

 

The following uses viewing and modifying eth0 as an example:

1. View MTU Value

# Cat/sys/class/NET/eth0/MTU

 

2. Modify MTU Value

# Echo "1460">/sys/class/NET/eth0/MTU

 

By the way, there are many files in the/sys/class/NET/eth0/directory, which correspond to the parameters of eth0, you can manually modify the values to configure Nic parameters.