1) RIPE NCC conducted active measurements from 49 vantage points to 53 participating IPv6 sites on World IPv6 Day from June 1-11, 2011. This included DNS, ping, traceroute, and HTTP tests. 2) The results showed that IPv6 connectivity worked properly but also revealed issues like sites temporarily turning off IPv6 or connectivity problems between networks. 3) Long term effects included a gradual increase in the percentage of Alexa top sites reachable over IPv6 and the number of ASNs announcing IPv6 prefixes after World IPv6 Day.

1. World IPv6 Day -
What did we learn?
emile.aben@ripe.net
(Channeled by Vesna Manojlovic)
Netnod Autumn Meeting 2011

2. RIPE NCC Measurements - World IPv6 Day
• IPv6 Eyechart and 6to4 (not in this talk)
• Active measurements
– Sources: 49 vantage points (RIPE TTM, CAIDA Ark, ...)
– Destinations: 53 participant or already dual-stacked
sites
– From 2011-06-01 to 2011-06-11 we measured
– DNS: A and/or AAAA records
– ping(6)/traceroute(6)
– HTTP over IPv4 and IPv6
2

3. Measurement vantage points
3

4. Percentage of vantage points seeing AAAA
v6day
4

5. Percentage of vantage points seeing AAAA
v6day
Negative caching
4

6. Percentage of vantage points seeing AAAA
v6day
TTL caching
Negative caching
4

7. Test and monitor

8. You don’t want this to happen
On IPv4:
On IPv6:
6

9. Or this ...
Comparing DNS,ping and HTTP IPv6 measurements
to www.commerce.gov from 2011-06-09 0:00 UTC to 2011-06-10 12:00 UTC
100 %
% AAAA queries returning an IPv6 address
% HTTP responses == 200
80 % % ICMPv6 ping success
60 %
40 %
20 %
0%
00
04
08
12
16
20
00
04
08
12
:0
:0
:0
:0
:0
:0
:0
:0
:0
:0
0
0
0
0
0
0
0
0
0
0
7

10. Or this ...
Comparing DNS,ping and HTTP IPv6 measurements
to www.commerce.gov from 2011-06-09 0:00 UTC to 2011-06-10 12:00 UTC
100 %
% AAAA queries returning an IPv6 address
% HTTP responses == 200
80 % % ICMPv6 ping success
60 %
40 %
20 %
0%
00
04
08
12
16
20
00
04
08
12
:0
:0
:0
:0
:0
:0
:0
:0
:0
:0
0
0
0
0
0
0
0
0
0
0
v6 on www turned off
at end of v6day
7

11. Or this ...
Comparing DNS,ping and HTTP IPv6 measurements
to www.commerce.gov from 2011-06-09 0:00 UTC to 2011-06-10 12:00 UTC
100 %
% AAAA queries returning an IPv6 address
% HTTP responses == 200
80 % % ICMPv6 ping success
60 %
40 %
20 %
0%
00
04
08
12
16
20
00
04
08
12
:0
:0
:0
:0
:0
:0
:0
:0
:0
:0
0
0
0
0
0
0
0
0
0
0
v6 on www turned off but v6 service still
at end of v6day announced
7

12. Test and monitor - lessons learned
8

13. Test and monitor - lessons learned
• Test when deploying something
– The more real-life, the less likely you !@#$-ed up
• Monitor your infrastructure
• People2people reachability
– Avoidable situations like Level3 and Dept. Commerce
– Contact info up to date in RIR databases (whois)
– Monitor the web (NANOG, *NOG, Twitter, ...)
8

14. Global view

15. Performance of src/dst pairs on 2011-06-08
Distribution of IPv4/IPv6 relative performance
• Bell-shaped
– centered around 0
IPv4 performs better IPv6 performs better
– with fatter IPv4-side
– (62% / 38%)
• Dual-stack = two
Frequency
chances for best
performance!
– Real-time apps could
exploit this (voice,
gaming)
+ 400 %
+ 350 %
+ 300 %
+ 250 %
+ 200 %
+ 150 %
+ 100 %
+ 50 %
+ 40 %
+ 30 %
+ 20 %
+ 10 %
+0%
+ 10 %
+ 20 %
+ 30 %
+ 40 %
+ 50 %
+ 100 %
+ 150 %
+ 200 %
+ 250 %
+ 300 %
+ 350 %
+ 400 %
best performing protocol, as percentage−wise increase over the least performing protocol
10

16. Long term effects - Content
Percentage of web sites in Alexa 1M that can be reached over IPv6
4%
Alexa 1M
3.5 % Alexa top 25k
3%
2.5 %
2%
1.5 %
1%
0.5 %
0% 2 20 20 20 20 20 20 20 20
01 11 11 11 11 11 11 11 11
1- -0 -0 -0 -0 -0 -0 -0 -0
01 2 3 4 5 6 7 8 9
Raw data: Dan Wing
(http://banjo.employees.org/~dwing/aaaa-stats.html)
11

17. Long term effects - Content
Percentage of web sites in Alexa 1M that can be reached over IPv6
4% 8 June:
Alexa 1M
3.5 % Alexa top 25k 3.8%
3%
2.5 %
2%
1.5 %
1%
0.5 %
0% 2 20 20 20 20 20 20 20 20
01 11 11 11 11 11 11 11 11
1- -0 -0 -0 -0 -0 -0 -0 -0
01 2 3 4 5 6 7 8 9
Raw data: Dan Wing
(http://banjo.employees.org/~dwing/aaaa-stats.html)
11

18. Long term effects - Content
Percentage of web sites in Alexa 1M that can be reached over IPv6
4% 8 June:
Alexa 1M
3.5 % Alexa top 25k 3.8%
3%
2.5 % Pre/post 8 June:
0.4% -> 0.7%
2%
1.5 %
1%
0.5 %
0% 2 20 20 20 20 20 20 20 20
01 11 11 11 11 11 11 11 11
1- -0 -0 -0 -0 -0 -0 -0 -0
01 2 3 4 5 6 7 8 9
Raw data: Dan Wing
(http://banjo.employees.org/~dwing/aaaa-stats.html)
11

19. Long term effects - Content
Percentage of web sites in Alexa 1M that can be reached over IPv6
4% 8 June:
Alexa 1M
3.5 % Alexa top 25k 3.8%
3%
2.5 % Pre/post 8 June:
0.4% -> 0.7%
2%
1.5 %
1% Around 3 July:
0.7% -> 1.0%
0.5 %
(DE?!)
0% 2 20 20 20 20 20 20 20 20
01 11 11 11 11 11 11 11 11
1- -0 -0 -0 -0 -0 -0 -0 -0
01 2 3 4 5 6 7 8 9
Raw data: Dan Wing
(http://banjo.employees.org/~dwing/aaaa-stats.html)
11

20. Long term effects - IPv6 ASes
12 % 8 June
announcing IPv6 pfx
11.5 %
% of ASes
11 %
10.5 %
10 %
9.5 %
50
Daily increase
40
of IPv6 ASes
30
20
10
0
-10
-20
-30
20
20
20
20
20
20
11
11
11
11
11
11
-04
-05
-06
-07
-08
-09
-01
-01
-01
-01
-01
-01
• Higher growth before v6d: Deployments pushed earlier?
• Lower growth after v6d: Summer-vacation?
• http://v6asns.ripe.net
Emile Aben 12

21. Conclusions - what we learned
• IPv6/dual-stack works just fine, but make sure
that
– It is properly tested and monitored (like IPv4)
– Your network can reach all others (like IPv4)
• Dual-stack = Two chances for best performance
• Days like this ‘work’
– Raise awareness
– Give people a target to work towards
– We’re ready for a next IPv6(day|week|month|year|∞)
13

22. More information
• Web interface to the measurements
– http://v6day.ripe.net/
• Analysis on RIPE Labs
– http://labs.ripe.net/ipv6day
• Raw data availability
– http://labs.ripe.net/datarepository/data-sets/ripe-ncc-
active-measurements-of-world-ipv6-day-dataset
• Questions?
– RIPE63! & emile.aben@ripe.net
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