[Yahoo-eng-team] [Bug 1531036] [NEW] Ip table rules for IP/MAC spoofing added when DHCP is disabled

Public bug reported: When a network is created that has DHCP disabled Neutron still creates IP/MAC spoof rules to stop the wrong IP being used from a MAC address, the problem with this is that if DHCP is provided by an external source on the network that's not Neutron the wrong IP is added to the

[Yahoo-eng-team] [Bug 1530729] [NEW] Create button in "Create Subnet" dialog on "Subnet Details" tab is disabled when "Disable Gateway" is selected

Public bug reported: When creating a subnet via the "Create Subnet" dialog, if the check box "Disable Gateway" is check and the user click on the "Subnet Details" tag in the dialog the create button is disabled an displayed as "Next >>". ** Affects: horizon Importance: Undecided