Em 07-09-2014 05:24, dE escreveu: > Hi! > > I installed CentOS 7 today, it's a minimal install, so it didn't have > ifconfig command. So I installed net-tools, however I can't add ipv6 > address to it. > > # ifconfig enp0s3 add fc00::1002/124 > SIOCSIFADDR: Permission denied. > > Yes, I'm running as root. > > CentOS is running in a Qemu instance with e1000 ethernet card. One more test. Please check sysctl -a | grep disable_ipv6 output And if it's =1, set it to 0. When NetworkManager is running, it may disable ipv6 on the interface if its not configured via NM... Marcelo