Update VoIP software review.

wiki/src/todo/VoIP_support.mdwn

@@ -70,8 +70,7 @@ information about the audio level of the individual participants
 VoIP software
 =============
 
-**Note**: these are relatively old notes that should be updated and
-further researched.
+**Last updated**: 20110429
 
 Ekiga
 -----
@@ -82,34 +81,41 @@ Ekiga
  * [last
    update](http://mail.gnome.org/archives/ekiga-devel-list/2009-April/msg00036.html)
    as of 200904
+- supports IPv6 for H.323 but not for SIP it seems
 
 Linphone
 --------
 
+- [homepage](http://www.linphone.org/), [[!wikipedia Linphone desc="wikipedia page"]]
 - in Debian Squeeze
 - supports IPv6
 - zRTP support [was asked
   for](http://www.archivum.info/linphone-developers@nongnu.org/2009-01/00013/(Linphone-developers)-Integrating-zRTP-protocol-into-LINphone.html)
+  but, as of 02 Dec 2010, they have [no plans to implement
+  it](http://www.mail-archive.com/linphone-users@nongnu.org/msg02640.html)
+  without "customer funding"
 
 Mumble
 ------
 
-- [homepage](http://mumble.sourceforge.net/), wikipedia: [[!wikipedia
-  Mumble_(software)]]
+- [homepage](http://mumble.sourceforge.net/), [[!wikipedia
+  Mumble_(software) desc="wikipedia page"]]
 - in Debian Squeeze
 - primary engineering effort targeted at low-latency
 - successfully tested in combination with OnionCat
 - TLS and OCB-AES128; seems to depend on a PKI for peer authentication
+- supports IPv6
 
 SFLphone
 --------
 
-- [homepage](http://www.sflphone.org/) wikipedia: [[!wikipedia
-  SFLphone]]
+- [homepage](http://www.sflphone.org/), [[!wikipedia
+  SFLphone desc="wikipedia page"]]
 - in Debian Squeeze
 - SIP
 - Multiple audio conferencing
 - TLS and zRTP
+- supports IPv6? [[!tag todo/research]]
 
 Jitsi (SIP Communicator)
 ------------------------
@@ -132,5 +138,6 @@ Twinkle
 - in Debian Squeeze
 - was included in Incognito
 - supports SIP, zRTP et SRTP
-- [[!taglink todo/research]]: IPv6 support?
+- supports IPv6
 - Qt application, but does not depend on KDE libs
+- no release between 20090225 and 20110429