I'm not trying to update the engine, I just want to install it. it's a simple lab, i use one interface and one subnet for node dans engine and a different subnet for the dns server. here the output of systemctl status NetworkManager NetworkManager.service - Network Manager Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: enabled) Active: active (running) since Mon 2021-05-17 09:33:54 EDT; 4h 0min ago Docs: man:NetworkManager(8) Main PID: 1415 (NetworkManager) Tasks: 3 (limit: 204123) Memory: 10.1M CGroup: /system.slice/NetworkManager.service └─1415 /usr/sbin/NetworkManager --no-daemon May 17 09:33:59 ov01.telecom.lan NetworkManager[1415]: <info> [1621258439.7693] manager: (bondscan-rg1vK3): new Bond device (/org/freedesktop/NetworkManager/Devices/12) May 17 09:33:59 ov01.telecom.lan NetworkManager[1415]: <info> [1621258439.8012] manager: (bondscan-rg1vK3): new Bond device (/org/freedesktop/NetworkManager/Devices/13) May 17 09:33:59 ov01.telecom.lan NetworkManager[1415]: <info> [1621258439.8254] manager: (bondscan-QjUsFZ): new Bond device (/org/freedesktop/NetworkManager/Devices/14) May 17 09:33:59 ov01.telecom.lan NetworkManager[1415]: <info> [1621258439.8641] manager: (bondscan-QjUsFZ): new Bond device (/org/freedesktop/NetworkManager/Devices/15) May 17 09:33:59 ov01.telecom.lan NetworkManager[1415]: <info> [1621258439.9078] manager: (bondscan-QjUsFZ): new Bond device (/org/freedesktop/NetworkManager/Devices/16) May 17 09:33:59 ov01.telecom.lan NetworkManager[1415]: <info> [1621258439.9455] manager: (bondscan-QjUsFZ): new Bond device (/org/freedesktop/NetworkManager/Devices/17) May 17 09:33:59 ov01.telecom.lan NetworkManager[1415]: <info> [1621258439.9974] manager: (bondscan-QjUsFZ): new Bond device (/org/freedesktop/NetworkManager/Devices/18) May 17 09:34:00 ov01.telecom.lan NetworkManager[1415]: <info> [1621258440.0261] manager: (bondscan-QjUsFZ): new Bond device (/org/freedesktop/NetworkManager/Devices/19) May 17 09:34:00 ov01.telecom.lan NetworkManager[1415]: <info> [1621258440.0702] manager: (bondscan-QjUsFZ): new Bond device (/org/freedesktop/NetworkManager/Devices/20) May 17 09:34:32 ov01.telecom.lan NetworkManager[1415]: <info> [1621258472.2080] manager: (;vdsmdummy;): new Bridge device (/org/freedesktop/NetworkManager/Devices/21