[www] provide links to videos for two events

[Mikhail]

diff --git a/events.html b/events.html
index a07f32967..fb37aa52b 100644
--- a/events.html
+++ b/events.html
@@ -430,7 +430,7 @@ Jul 1-2, 2017, London, UK.<br>
 <a href="http://www.bsdcan.org/2017/";>BSDCan 2017</a></strong>,
 June 7-10, 2017, Ottawa, Canada.<br>
 <ul>
-<li>Henning Brauer, <a href="http://bulabula.org/papers/2017/bsdcan/";>TCP 
Synfloods - an old yet current problem, and improving pf's response to it</a>
+<li>Henning Brauer, TCP Synfloods - an old yet current problem, and improving 
pf's response to it (<a 
href="http://bulabula.org/papers/2017/bsdcan/";>slides</a> and <a 
href=https://www.youtube.com/watch?v=KuHepyI0_KY>video</a>)
 </ul>
 <p>
 
@@ -512,7 +512,7 @@ June 8 - 11, 2016, Ottawa, Canada.<br>
 <li>Sebastian Benoit, <a href="papers/bsdcan2016-osr/index.html">Open Source 
Routing</a>
 <li>Mike Belopuhov, <a href="papers/bsdcan2016-xen.pdf">Implementation of Xen 
PVHVM Drivers in OpenBSD</a>
 <li>Henning Brauer, Running an ISP on OpenBSD
-<li>Reyk Fl&ouml;ter, <a href="papers/bsdcan2016-switchd.pdf">An OpenFlow 
Implementation for OpenBSD</a>
+<li>Reyk Fl&ouml;ter, An OpenFlow Implementation for OpenBSD (<a 
href="papers/bsdcan2016-switchd.pdf">slides</a> and <a 
href="https://www.youtube.com/watch?v=Cuo0qT-lqig";>video</a>)
 <li>Peter Hessler, <a href="papers/bsdcan2016-bfd.pdf">Bidirectional 
Forwarding Detection (BFD) Implementation
     and Support in OpenBSD</a>
 <li>Antoine Jacoutot, <a 
href="https://www.bsdfrog.org/pub/events/openbsd-rcd-BSDCan2016.pdf";>OpenBSD 
rc.d(8)</a>