script to retrieve CMC IP returns invalid address

Hello, I've been using this powershell script, VRTX_CMCIPAddress.ps1, (

http://en.community.dell.com/techcenter/b/techcenter/archive/2013/11/21/in-band-retrieval-of-the-chassis-management-controller-s-cmc-s-ip-address ) for months now, in order to get the current VRTX CMC ip address from an installed blade OS, by leveraging the Microsoft IPMI built-in driver. The OS is always Windows 2012 R2. Lately, when I set the CMC to get its ip from a DHCP server, the script sometimes fails, returning "odd" addresses like 0.204.0.52.
When this happens, I usually have to reattach the CMC network cable or restart the CMC (!), in order to have the script to report back the correct CMC ip.

Any idea on what might be the cause of this issue?