Network Manager creating problem in mounting file-system from network

[magina antimage]

Hi,
    I have ported fedora for my target board(x86).
     I am mounting File-system from nfs
    During boot when NetworkManager service starts ,it kills nfs probably
because of resetting ip and my board doesn't boots up and i get
  "nfs: server '*value of ip_address passed during boot*' not responding,
still trying"
     is it possible that network manager should  not reset ip of board

regards.
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