Link: https[://]mullvad[.]net/en/blog/daita-bug-in-ios-app-versions-20251-and-20252
We have found a bug in our iOS app related to DAITA and multihop in app versions 2025.1 and 2025.2. An update with a fix is coming soon.
When DAITA is used with multihop, app will erroneously report that DAITA is in use, when in fact it is not. One can still safely use DAITA only if they enable the direct only option and disable multihop, with the downside that there are fewer usable servers.
The bug itself was introduced as we were upgrading to version 2 of DAITA, where we negotiate DAITA parameters with servers before setting up the connection. Since we must negotiate with the entry first and the exit afterwards, the app erroneously used the last DAITA parameters that were negotiated. Since DAITA is only ever applied to the entry connection, the app ended up using the non-existent DAITA parameters negotiated with the exit.
We have a fix and we are working on making a release in the coming week.