Hi Stéphane, This doesn't sound like expected behavior. Could you file a bug report so that we can take a closer look? As part of the information you gather, please enable IPConfiguration verbose logging: # sudo ipconfig setverbose 1 Reproduce the problem, then capture a get-mobility-info snapshot and attach it to the bug report: # /System/Library/Frameworks/SystemConfiguration.framework/Resources/get-mobility-info Thanks, Dieter

On Sep 26, 2014, at 7:44 AM, Stéphane Sudre <ssudre@intego.com> wrote:

Let's say an iPhone 5s running iOS 7 is used as Personal Hotspot.

Let's say it then provides both an IPv4 and IPv6 connections.

Question: ---------

Is it considered the expected behavior that the System Configuration framework reports that the IPv6 address of the router (i.e. the iPhone) does change almost every minute?

When the iPhone only provides an IPv4 connection, the router address does not periodically change. When the iPhone provides both an IPv4 and IPv6 connections, the System Configuration framework reports periodically some changes to the IPv4 connections but the IPv4 address of the router does not change.

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