taglinefilesource code
ifr_mtu147include/linux/if_ppp.h#if !defined(ifr_mtu)
ifr_mtu1153net/core/dev.cifr.ifr_mtu = dev->mtu;
ifr_mtu1162net/core/dev.cif(ifr.ifr_mtu<68)
ifr_mtu1164net/core/dev.cdev->mtu = ifr.ifr_mtu;