As some probably noticed a lot of long pending changes happened to the
ISDN subsystem this weekend. As a result many hard coded assumptions are
gone now. Unfortunately some of them have been part of the kernel<->userland
API. Those had to be cleaned up as well.

This means you need to run a new isdnd when using a new
kernel. A minimal update step is:

  cd /usr/src/sys/netisdn && make includes
  cd /usr/src/usr.sbin/isdn/isdnd && make && make install

If you want to go back to the previous kernel eventually, it would be a good
idea to keep a copy of the old /usr/sbin/isdnd somewhere.

Sorry for the inconvenience. Let me know if anything broke for you.

Martin

P.S.: during the transition the AVM Fritz! PCI driver has been broken for some
hours, this is supposed to be fixed now.