code: func ElectInterfaceAddresses(name string) ([]*net.IPNet, []*net.IPNet, error) {
  	return nil, nil, types.NotImplementedErrorf("not supported on freebsd")
  }
docs: // ElectInterfaceAddresses looks for an interface on the OS with the specified name
  // and returns returns all its IPv4 and IPv6 addresses in CIDR notation.
  // If a failure in retrieving the addresses or no IPv4 address is found, an error is returned.
  // If the interface does not exist, it chooses from a predefined
  // list the first IPv4 address which does not conflict with other
  // interfaces on the system.