code: func (p *Position) IsBroadcast() bool {
  	return !p.IP.IsUnspecified() && !p.IP.IsMulticast() && p.IP.To4() != nil && (p.IP.Equal(net.IPv4bcast) || p.IP.Equal(p.Prefix.Last()))
  }
docs: // IsBroadcast reports whether p is an IPv4 directed or limited
  // broadcast address.