Its a bug, if you read more of the bug reports, you'll see that things actually don't work, and actually are a regression from older versions.
Specifically, DHCP doesn't work on virtual ethernet interfaces (such as eth0:0), and if DHCP is on the parent interface (eth0), that when you stop the DHCP client/tools, it takes down the parent interface along with all/any virtual interfaces.
Its a bug, if you read more of the bug reports, you'll see that things actually don't work, and actually are a regression from older versions.
Specifically, DHCP doesn't work on virtual ethernet interfaces (such as eth0:0), and if DHCP is on the parent interface (eth0), that when you stop the DHCP client/tools, it takes down the parent interface along with all/any virtual interfaces.
Tyler.