HWADDR Configuration error causes network restart failed to process

If because of the/etc/sysconfig/network-scripts/under the Ifcfg-eth0 (here to eth0 network card name as an example), where the HWADDR configuration error, do not know where to find the original hwaddr, you can try two ways:

1, the implementation of ifconfig-a (if not, you can execute IP a command, CENTOS7 system by default to take this command), view the MAC address, and modify the original configuration;

2, find the/etc/udev/rules.d/70-persistent-net.rules file and view, if there are eth0 records in accordance with its configuration (or delete the eth0 corresponding to the data, and then execute the start_udev command).

Description

/etc/udev/rules.d/70-persistent-net.rules This file will reload when the system restarts, or the execution of the Start_udev command will be reloaded.