def nla_put_flag(msg, attrtype):
return nla_put(msg, attrtype, <NUM_LIT:0>, None)<EOL>
Add flag Netlink attribute to Netlink message.

    https://github.com/thom311/libnl/blob/libnl3_2_25/lib/attr.c#L709

    Positional arguments:
    msg -- Netlink message (nl_msg class instance).
    attrtype -- attribute type (integer).

    Returns:
    0 on success or a negative error code.