使用 ifup hook centos|centos6.|centos7. /etc/sysconfig/network-scripts/if-up.d/mtucfg- i n t e r f a c e 或 / e t c / s y s c o n f i g / n e t w o r k − s c r i p t s / i f c f g − {interface} 或 /etc/sysconfig/network-scripts/ifcfg- interface或/etc/sysconfig/network−scripts/ifcfg−{interface} debian9*|debian10* /etc/network/if-up.d/mtucfg- i n t e r f a c e u b u n t u 16. ∗ / e t c / n e t w o r k / i f − u p . d / m t u c f g − {interface} ubuntu16.* /etc/network/if-up.d/mtucfg- interfaceubuntu16.∗/etc/network/if−up.d/mtucfg−{interface}

使用NetworkManager up 事件 hook centos8.* /etc/NetworkManager/dispatcher.d/99-mtucfg-${interface}

使用netplan ubuntu18.|ubuntu20. /etc/netplan/99-mtucfg-${interface}.yaml network: version: 2 ethernets: ${interface}: dhcp4-overrides: use-mtu: false mtu: ${new_mtu_value}

使用ifcfg centos6.|centos7.|suse15.* /etc/sysconfig/network/ifcfg- i n t e r f a c e M T U = {interface} MTU= interfaceMTU={new_mtu_value}