linkup is a wrapper function for waiting interface ready and up.
change to use linkup as what we do in ifup script.
Signed-off-by: Dave Young <dyoung@redhat.com>
dhclient initqueue hook fix
setup_net is scheduled in initqueue, sometimes it does not get chance to run
So the default route will not be set properly
Add a check in initqueue/finished to resolve this issue.
Signed-off-by: Dave Young <dyoung@redhat.com>