When an IMM is restarted from the web portal the usb interface (used by IMM) fails to assign Ip to the interface

Issue

• When IMM (Integrated Management Module) is restarted via web portal, the usb interface is disconnected and reconnected on the system. But IP address is not set on this interface.
• Running ifdown usb0 and ifup usb0 manually resolves the issue, but IP does not get assigned automatically with hotplug.
• IP address is assigned with system (re-)boot on the USB device.
• The ifconfig -a result is:

usb0      Link encap:Ethernet  HWaddr XX:XX:XX:XX:XX:XX
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

• The ifcfg-usb0 configuration is:

HWADDR=XX:XX:XX:XX:XX:XX
DEVICE=usb0
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.0.1
NETMASK=255.255.255.0
TYPE=Ethernet