Bug: The uniqid of the virtual IP address is lost when you modify the type

[wiki345]

My interfaces：LAN, WAN, WAN2
1、I add IP Alias VIP 155.155.155.155 on WAN2, it's ok. Get the uniqid: 5831b1cbbbdcd

2、Then I change this VIP's type to Other, Now, the uniqid is lost to empty：

3、So，at last When I change this VIP type from "Other" back to "IP Alias", The uniqid value is also empty.
    At this time， I look by command ifconfig, the IP 155.155.155.155 is in WAN but not in WAN2(on web config),
    I delete the VIP 155.155.155.155, but the IP still in WAN by command ifconfig.

SO, this is bug! Uniqid lost causes this problem.