Symptoms
When you deploy DirectAccess to connect to Microsoft Lync 2013 (Microsoft Skype for Business), media traffic that is set up over IPv6 may be unreliable and drops easily. This update adds a new client policy setting from in-band provisioning in the endpointConfiguration provisioning group to disable media traffic over IPv6. The new policy provisioning setting is displayed as follows:
<provisionGroup name="endpointConfiguration">
<propertyEntryList>
<property name="ShowRecentContacts">true</property>
...
<property name="DisableMediaOverIPv6">True</property>
</propertyEntryList>
</provisionGroup>
Note The Lync 2013 (Skype for Business) client updates in-band provisioning every eight hours. If the value of the DisableMediaOverIPv6 parameter is changed, a new value will be set on media manager API during the update time.
How to apply the update
To apply this update, install the August 11, 2015 security update (KB3055014) for Lync 2013 (Skype for Business).
Note Lync 2013 was upgraded to Skype for Business in April 2015.
