虚拟机配置bond网卡mode模式为4时控制台一直循环输出：
May 4 11:32:03 local-huajing kernel: bond0: (slave ens33): An illegal loopback occurred on slave#012Check the configuration to verify that all adapters are connected to 802.3ad compliant switch ports May 4 11:32:03 local-huajing kernel: bond0: (slave ens37): An illegal loopback occurred on slave#012Check the configuration to verify that all adapters are connected to 802.3ad compliant switch ports
修改mode为1主备模式即可。