官网的版本lvs有带防御ddos功能的吗

看到阿里版本有防ddos功能:
SYNPROXY support were added to keepalived/ipvsadm by Jiajun Chen and Ziang Chen at taobao.com.
官网不知道有没有?

Forums:

没有的,这个是fullnat中增加的

官方的新版内核貌似做在nftables里

randomness