Odd thing happened... A centos 7 install set for DHCP. boot the box no network connected. I let it like this overnight. I come in this morning and plug in the network. Is it supposed to get a DHCP address at that time ? It did not . service network restart did get an address. if I unplug the network, reboot the box, want a minute or so - then plug the network in - it gets a DHCP address. Is there a "limit" to the time that the OS will keep trying to get a DHCP address ? Thanks, Jerry