method
    
    mask
 
  mask(prefixlen)
  public
  Returns a new ipaddr built by masking IP address with the given prefixlen/netmask. (e.g. 8, 64, "255.255.255.0", etc.)
 
  mask(prefixlen)
  public
  Returns a new ipaddr built by masking IP address with the given prefixlen/netmask. (e.g. 8, 64, "255.255.255.0", etc.)