ANSI Escape Sequences Standard escape codes are prefixed with Escape: Ctrl-Key: ^[ Octal: \033 Unicode: \u001b Hexadecimal: \x1B Decimal: 27
Check if docker zone exists in firewall-cmd $ firewall-cmd --get-active-zones If "docker" zone is available, change interface to docker0 (not persisted) $ sudo firewall-cmd --zone=docker --change-interface=docker0 If "docker" zone is available, change interface to docker0 (persisted, thanks rbjorklin)