Knx secure with MDT IP-routers not working after restart of OH

Thanks a lot for your fast reactionand trying to fix that. I have just now installed the RC2 version and have again not a proper working restart of the knx-system. Now the secure router mode in not changing during restart. This is really fixed. But I the broadcast IP-address of the knx IP-router is changing to the IP-address of the device itself. This has alo the effect the the knx system does not work. This is not always the case. sometimes the broadcast IP-address stay at the 224.0.23.12 and sometimes it changes to the device-address.
Maybe you have an idea what could be reason of this?
Thanks a lot in advance!