Please don't take this the wrong way, but this sounds like you are solving the wrong problem. I'd invest the resources into solving the 'network goes down' problem.
In either mode during a takeover event being directly connected to the node thats rebooting won't help you when the lif has failed over or the IP has been taken over by the partner. In cDOT lifs can move from port to port. So its better to add resiliency to the network design, than to design around not having a functioning network.
If this post resolved your issue, help others by selecting ACCEPT AS SOLUTION or adding a KUDO.
in emergencies cases I will take the data network down for maintenance or other activity . but still I want only this server to be active to filer.
for takeover I'm think of have another third nic and create network teaming in windows server and conntect the new nic to partnter node and have the lif in ifgroup fo the both port in each controller .