Provided by: systemtap-doc_3.1-3ubuntu0.1_all 

NAME
probe::netdev.change_mtu - Called when the netdev MTU is changed
SYNOPSIS
netdev.change_mtu
VALUES
new_mtu
The new MTU
dev_name
The device that will have the MTU changed
old_mtu
The current MTU
SEE ALSO
tapset::networking(3stap)
SystemTap Tapset Reference March 2016 PROBE::NETDEV.CHAN(3stap)