Related: OS#6272 Change-Id: I4a8cb558816534ac942bc38ff0b178849d610457
prior to this patch, the configured vpair interfaces would not be saved to the config file on 'write file'. Change-Id: Iff6551318534a3717c374060082147f17b925a21
Change-Id: I25c28f7a1eeb4deaebba3b2fd593cbbdceb1fa07