docs: def nla_next(nla, remaining):
      """Return next attribute in a stream of attributes.
  
      https://github.com/thom311/libnl/blob/libnl3_2_25/lib/attr.c#L171
  
      Calculates the offset to the next attribute based on the attribute given. The attribute provided is assumed to be
      accessible, the caller is responsible to use nla_ok() beforehand. The offset (length of specified attribute
      including padding) is then subtracted from the remaining bytes variable and a pointer to the next attribute is
      returned.
  
      nla_next() can be called as long as remaining is >0.
  
      Positional arguments:
      nla -- attribute of any kind (nlattr class instance).
      remaining -- number of bytes remaining in attribute stream (c_int).
  
      Returns:
      Next nlattr class instance.
      """
      totlen = int(NLA_ALIGN(nla.nla_len))
      remaining.value -= totlen
      return nlattr(bytearray_ptr(nla.bytearray, totlen))