1. Cisco Public 1 © 2014 Cisco and/or its affiliates. All rights reserved. Eric VYNCKE, Cisco, evyncke@cisco.com Marcel ENGUEHARD, École Polytechnique September 2014

2. © 2014 Cisco and/or its affiliates. All rights reserved. Cisco Pubic 2 HTTP HEAD request TCPDUMP + Java TCPDUMP + Java

3. © 2014 Cisco and/or its affiliates. All rights reserved. Cisco Pubic 3

4. © 2014 Cisco and/or its affiliates. All rights reserved. Cisco Pubic 4

5. © 2014 Cisco and/or its affiliates. All rights reserved. Cisco Pubic 5 Distribution of IPv4 and IPv6 RTTs (in µs) from APNIC’s dataset

6. © 2014 Cisco and/or its affiliates. All rights reserved. Cisco Pubic 6 HE: most important IPv6 backbone provider Routeview.org Ashburn’s router BGP table presence of AS6939: 44,8% of the IPv6 routes 16,9% of the IPv4 routes Hurricane Electric’s network map

7. © 2014 Cisco and/or its affiliates. All rights reserved. Cisco Pubic 7 RTT distribution from Singapore to mail.de (in µs) Paths in IPv4 and IPv6 from Singapore to mail.de

8. © 2014 Cisco and/or its affiliates. All rights reserved. Cisco Pubic 8 Geographically incoherent routing Path taken on AS6453 (TATA Comm.) by a TCP connection between our Rackspace server and e-foia.uspto.gov Distribution of IPv4 and IPv6 RTTs (in µs) between our server in Virginia and e-foia.uspto.gov

9. © 2014 Cisco and/or its affiliates. All rights reserved. Cisco Pubic 9 BGP peering is not optimal, either in v4 or v6 Lots of Ases are happy enough to peer with only 2 or 3 tier 1 backbone providers Peering agreements are specific to v6 Specific ASes’ topology influence routing too much Particularly in intercontinental connections

10. Thank you.