<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div><span></span></div><div><meta http-equiv="content-type" content="text/html; charset=utf-8"><div><br></div><div><div></div>On Oct 15, 2017, at 21:08, <a href="mailto:longtb5@viettel.com.vn">longtb5@viettel.com.vn</a> wrote:<br><br></div><blockquote type="cite"><div><p class="MsoNormal"><o:p></o:p></p><p class="MsoNormal">Now I want to use dnsdist to distribute DNS request onto those 2 DNS servers. Wouldn’t that make dnsdist the new SPoF?</p></div></blockquote><div>Yes, for DNS you need a way to reroute the IP to a “live” box.</div><div><br></div><div>If your network supports it, anycast with BGP is a popular choice and will allow you to to do load balancing and failover to a separate location (as Chris explained).</div><div><br></div><div>If the dnsdist servers are on the same network segment, carp (BSD) or vrrp (lots of equipment, keepalived) work well.</div><div><br></div><div><br></div><div>Ask</div></div></body></html>