networkmanger出现双网关问题

https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html/configuring_and_managing_networking/assembly_networkmanager-connection-profiles-in-keyfile-format_configuring-and-managing-networking#the-differences-in-interface-renaming-with-profiles-in-ifcfg-and-keyfile-format_assembly_networkmanager-connection-profiles-in-keyfile-format

https://help.aliyun.com/zh/alinux/user-guide/networkmanager-configuration-files-and-common-configurations

https://docs.redhat.com/zh-cn/documentation/red_hat_enterprise_linux/8/html/configuring_and_managing_networking/proc_fixing-unexpected-routing-behavior-due-to-multiple-default-gateways_managing-the-default-gateway-setting#proc_fixing-unexpected-routing-behavior-due-to-multiple-default-gateways_managing-the-default-gateway-setting

 

https://docs.redhat.com/zh-cn/documentation/red_hat_enterprise_linux_openstack_platform/7/html/director_installation_and_usage/sect-configuring_routes_and_default_routes