<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi,list:<div><br></div><div> I have some linux router/NAT box, each can serve 500-600Kpps traffic. Last week, I observed the ddos attack, it report ipt_netflow sendbuffer overlimit and cpu usage high. So I took a look at BSD family. I've tested freebsd a bit, it have trouble with polling and NIC¡®s multi queues, and it have high context switch.</div><div> I've searched some posts about dfly's ifpoll and ifq etc. I really appreciate it. but I can't <span class="Apple-style-span" style="color: rgb(61, 61, 61); font-family: Arial, sans-serif; font-size: 13px; line-height: 18px; ">determine dfly BSD support multi RIB, ng_netflow, smp friendly pf, flow etc. And the BIRD route suite can support policy routing and worked fine on the dfly BSD?</span></div><div><span class="Apple-style-span" style="color: rgb(61, 61, 61); font-family: Arial, sans-serif; font-size: 13px; line-height: 18px; "> Maybe someone can figure out some solution to suit my </span><span class="Apple-style-span" style="color: rgb(61, 61, 61); font-family: Arial, sans-serif; font-size: 13px; line-height: 18px; ">requirements,thanks.</span></div><div><span class="Apple-style-span" style="color: rgb(61, 61, 61); font-family: Arial, sans-serif; font-size: 13px; line-height: 18px; "><br></span></div><div><span class="Apple-style-span" style="color: rgb(61, 61, 61); font-family: Arial, sans-serif; font-size: 13px; line-height: 18px; "><br></span></div><div><span class="Apple-style-span" style="color: rgb(61, 61, 61); font-family: Arial, sans-serif; font-size: 13px; line-height: 18px; ">best regards</span></div><div><span class="Apple-style-span" style="color: rgb(61, 61, 61); font-family: Arial, sans-serif; font-size: 13px; line-height: 18px; ">Simon</span></div><div><br></div></body></html>