docs: def nla_put_u64(msg, attrtype, value):
      """Add 64 bit integer attribute to Netlink message.
  
      https://github.com/thom311/libnl/blob/libnl3_2_25/lib/attr.c#L638
  
      Positional arguments:
      msg -- Netlink message (nl_msg class instance).
      attrtype -- attribute type (integer).
      value -- numeric value to store as payload (int() or c_uint64()).
  
      Returns:
      0 on success or a negative error code.
      """
      data = bytearray(value if isinstance(value, c_uint64) else c_uint64(value))
      return nla_put(msg, attrtype, SIZEOF_U64, data)