The document discusses the impact of IPv6 on SIP and telecom, detailing challenges and solutions related to address allocation, NAT, and DNS. It also highlights the importance of migration strategies for implementing IPv6, interoperability testing, and community engagement through platforms like the SIP Forum's mailing list. Finally, it introduces the Internet Society's Do Hub initiative aimed at supporting standards adoption, including IPv6 and DNSSEC.

1. How IPv6 Impacts SIP
and Telecom
Dan York
Senior Content Strategist, DO Hub
york@isoc.org
+1-802-735-1624
www.internetsociety.org

2. Dan York
www.danyork.com
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3. My Recent Change
DO Hub Project
york@isoc.org
+1-802-735-1624
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4. The Internet Society

5. Why IPv6?
www.internetsociety.org

6. In The Beginning...
192.168.20.12
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7. Mobility
www.flickr.com/photos/kapungo/3396823518/
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8. A Plethora of Portable Platforms
www.flickr.com/photos/clonedmilkmen/5111779335/
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9. Internet of Things
www.flickr.com/photos/dmje/5159177886/
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10. Internet of Things
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11. Internet of Things
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12. EVERYTHING
over
IP
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13. How IP Address Allocation Works
Regional Internet Registries (RIRs)
Internet Service Providers (ISPs)
You
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14. Global IPv4 Disparity !
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15. Oops... as of Feb 1, 2011...
All Gone!
Regional Internet Registries (RIRs)
Internet Service Providers (ISPs)
You
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16. Solutions?
www.internetsociety.org

17. IPv4 Marketplace
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18. Prolonging IPv4 - NAT Today
NAT
Public
IP
Private
IP
Addresses
PC
Home
Internet Firewall Firewall
Firewall
IP
ISP
Phone
Home
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19. Carrier Grade NAT (a.k.a. LSN)
NAT
Public
IP
Private
IP
Addresses
PC
Home
Internet Firewall Firewall
Firewall
IP
ISP
Phone
Home
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20. Old NATs Never Die...
NAT
NAT
Public
IP
Private
IP
Private
IP
Addresses
Addresses
PC
Home
Internet Firewall Firewall
Firewall
IP
ISP
Phone
Home
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21. The Problem?
SIP NAT
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22. Oh, and by the way...
(sorry... we still have NAT-like networks with IPv6...)
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23. And then there is...
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24. IPv6 Challenges:
User Interfaces
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25. See the problem?
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26. See the problem?
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27. IPv4
192.168.20.12
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28. IPv6
2001:db8:34a5:23:aa1f:12f4:9009:1234
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29. IPv6 Address Compression
2001:db8:34a5:0:0:0:0:1
2001:db8:34a5::1
(oh, and they aren’t case-sensitive)
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30. IPv6 Addresses
127.0.0.1 ::1
0.0.0.0 ::
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31. DNS is your friend!
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32. IPv6 Challenges:
Port Numbers
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33. IPv4 Port Numbers
192.168.20.12:5060
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34. IPv4 Port Numbers in IPv6?
192.168.20.12:5060
2001:db8:34a5::1234:5060
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35. IPv6 Port Numbers
[2001:db8:34a5::1234]:5060
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36. IPv6 addressing
http://[2001:db8:34a5::1234]/index.html
http://[2001:db8:34a5::1234]:8080
sip:dan@[2001:db8:34a5::1234]
sip:dan@[2001:db8:34a5::1234]:5060
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37. DNS is your friend!
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38. IPv6 Challenge:
Multiple Addresses
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39. IPv4 – Single Address / Interface
192.168.20.12
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40. IPv6 – Multiple Addresses / Interface
192.168.20.12
2001:db8:34a5:92:21c:a5ff:fe12:3a80
(global)
fe80::21c:a5ff:fe12:3a80
(link-local)
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41. IPv6 – Neighbor Discovery
No More DHCP For Address
Assignment
(well, unless you want it)
Router Advertisements vs ARP
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42. IPv6 – Address Creation
Router Advertisement
2001:db8:34a5:92:21c:a5ff:fe12:3a80
Autoconfiguration from
Ethernet Address
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43. DNS is your friend!
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44. IPv6 Challenges:
DNS
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45. IPv4 and DNS
example.com 3600 IN A 192.168.20.12
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46. IPv6 and DNS
example.com 3600 IN A 192.168.20.12
example.com 3600 IN AAAA 2001:db8:34a5::1234
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47. IPv6 DNS Fun
What if DNS gives a AAAA....
but your system doesn’t have
“real” IPv6 connectivity?
(You can retrieve AAAA records over IPv4)
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48. UNhappy Eyeballs
DNS
Svr
example.com A 192.168.20.12
example.com AAAA 2001:db8:34a5::1234
AAAA
?
You (a long time later...)
A
?
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49. Happy Eyeballs
DNS
Svr
example.com A 192.168.20.12
example.com AAAA 2001:db8:34a5::1234
AAAA
?
A
?
You
(sent at same time;
whichever replies first wins)
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50. Happy Eyeballs
draft-ietf-v6ops-happy-eyeballs
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51. IPv6 Challenges:
Storing IP Addresses
www.internetsociety.org

52. How Do You Store IP Addresses?
Memory?
Databases?
Config Files?
Room for two? (or more?)
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53. Config Files
<category name="SIP">
<item name="Server1">127.0.0.1:5060
</item>
</category>
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54. IPv6 and SIP
www.internetsociety.org

55. IPv6 Works Fine!
Linphone – http://www.linphone.org
Open source, free and available for Linux, Windows and MacOS X
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56. Linphone and IPv6
Linphone – http://www.linphone.org
Open source, free and available for Linux, Windows and MacOS X
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57. RFC 6157
RFC 6157
“IPv6 Transition in the Session
Initiation Protocol (SIP)”
tools.ietf.org/html/rfc6157
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58. SIP Architecture
SIP SIP
Proxy Proxy
A SIP B
SIP SIP
Alice Bob
Media (RTP, MSRP, etc.)
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59. SIP Reality
SIP SIP SIP SIP SIP
Proxy Proxy Proxy Proxy Proxy
A SIP B SIP C SIP D SIP N
SIP Internet (or WAN) SIP
Media Media
Alice Proxy Proxy Bob
Media A Media B Media
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60. “SIP” = Multiple Protocols
SIP
SDP
RTP
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61. IPv4/IPv6 Fun
Communicating between IPv4 client and IPv6 client
through a proxy
§ Record-Route: <sip:2001:db8::1;lr>
§ Record-Route: <sip:192.0.2.1;lr>
Mixed communication across a path of proxies
Mixed communication: IPv6 for SIP, IPv4 for media
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62. IPv6 and SDP
Only allows a single IP address per media stream (“c=“
parameter)
§ c=IN IP4 192.168.20.12
§ c=IN IP6 2001:db8:34a5::1234
Multiple proposals for additional SDP parameters
§ ex. ANAT - RFC 4091 & 4092 – now deprecated by ICE
The IETF way forward is ICE – RFC 5245
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63. NAT, NAT, NAT...
STUN, TURN, ICE
(RFC 5245)
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64. Discovery of SIP Servers
User agents need to find SIP servers/proxies
DHCPv6
§ SIP Options in RFC 3319
DNS SRV, NAPTR and AAAA Records (RFC 3263)
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65. Other IPv6 Considerations
Other interfaces
§ Web and management systems
§ Logging
§ APIs
Custom SIP headers
Multi-vendor interoperability
SBC and firewall support for SIP over IPv6
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66. SIPNOC 2011 IPv6 BOF
April 2011 BOF at SIPNOC 2011 in Herndon, VA
Identified potential actions:
§ Migration plans: collecting and publicizing plans that are available, helping
find others
§ Identification of interoperability tests or test plans that include IPv6 and SIP
§ Providing case studies of successful migrations
§ Listing SIP-related tools/services/products that support IPv6
§ General education around IPv6 and SIP / real-time communication
Created new mailing list:
§ sipforum.org/mailman/listinfo/ipv6
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67. SIP Forum “IPv6” Mailing List
sipforum.org/mailman/listinfo/ipv6
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68. SIPit Test Events
sipit.net
SIPit 28: “68% of the implementations present supported IPv6.”
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69. Get Started With SIP and IPv6...
http://bit.ly/voxeoipv6
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70. Set up Test Lab or your Home Office
http://tunnelbroker.net
www.test-ipv6.com
www.ipv6-test.com
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71. SIP Softphones Supporting IPv6
Linphone
§ www.linphone.org
Jitsi (formerly SIP Communicator)
§ www.jitsi.org
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72. Olle Would Want Me To Mention...
Asterisk 1.8
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73. Voxeo Application Platforms
Voxeo Prophecy 10.1
§ Standards-based platform for speech, IVR and SIP applications
§ Downloads and installs in minutes; Scales from 2 ports to 10’s
of thousands of ports
§ World’s most compatible and compliant VoiceXML and CCXML
Voxeo PRISM 10.1
§ Real-time Communications Application Server
§ Supports Converged SIP, Web and XMPP applications.
§ Carrier grade high performance platform with full support of high
availability and session replication
Free developer versions for Windows, Linux,
Mac OS X
www.voxeo.com/prophecy
www.voxeo.com/prism
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73

74. SIP Forum “IPv6” Mailing List
sipforum.org/mailman/listinfo/ipv6
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75. A New Internet Society Initiative
Bridging the Divide Between IETF Standards and Industry-wide Deployment
www.internetsociety.org

76. Deployment & Operationalization (DO) Hub
Helps you
• DO IPv6
• DO DNSSEC
• DO other future standards
www.internetsociety.org

77. What DO Hub Will Look Like
• Online portals for new standards adoption
• IPv6, DNSSEC, future standards topics
• Knowledge base with deployment articles
• Case studies
• Blogs (deployment commentary)
• Social media
• Multiple languages
• ION meeting series
• Co-located with diverse set of events
• Events being planned to reach each continent
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78. When DO Hub Will Be Available
• October 2011
• Preview web presence release
• Engagement with first adopters begins to create initial
knowledge base articles
• First co-located ION event in Buenos Aires
• December 2011
• Official launch of DO Hub resource
• First knowledge base articles published
• Social media and blogging
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79. How DO Hub Will Grow
• New deployment articles will be added to the
knowledge base on a regular basis
• Our blogs and social media efforts will provide an
ongoing conversation about deployment
• We will feature the work of other groups
• We will add features to this deployment resource in
response to feedback received from audiences
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80. How to Participate
• Help Create Content
• We are working with first adopters and experts to
develop our materials
• We will credit your work
• Help Define New Features
• We seek your valuable feedback on this deployment
resource
• We have the flexibility to make changes/additions
• Contact us: dohub@isoc.org
The Internet Society

81. Dan York
Senior Content Strategist, DO Hub,
Internet Society
york@isoc.org
+1-802-735-1624
Thank You!
Follow us at:
twitter.com/InternetSociety
Facebook.com/InternetSociety
www.internetsociety.org