Method: Pio::IPv4Address#prefixlen

Defined in:
lib/pio/ipv4_address.rb

#prefixlen ⇒ Number

Returns prefix length of IPv4 address.

Returns:

  • (Number) —

    prefix length of IPv4 address.


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# File 'lib/pio/ipv4_address.rb', line 50

def prefixlen
  netmask = to_range.first.to_i ^ to_range.last.to_i
  if netmask > 0
    32 - format('%b', netmask).length
  else
    32
  end
end