IF LPM is supported:
If ecmp supported:
the field NextHop_ref_count used to save number
of NextHop SETs that use the NextHop.
Otherwise, NextHop_ref_count used to save number of
NFFT entries that use the NextHop.
IF LPM is NOT supported:
NextHop_ref_count used to save number of
Remote SFFT entries that use the NextHop.