- The analog module of the DVB-C should be detected automatically.

- If you are using a Technotrend/Hauppauge DVB-C card *without* analog module,
  you might have to use module parameter adac=-1 (dvb-ttpci.o).

- If you do not receive any packets over the dvb0 device the reason could 
  be the rp_filter. 
  Check if your distribution enables this or disable it with:

  "echo 0 > /proc/sys/net/ipv4/conf/dvb0/rp_filter"

  This disables source validation by reversed path lookup.valgrind-1.0pre3-dvb.patch enables checking correct usage
of the the Linux DVB API ioctls with valgrind
(http://developer.kde.org/~sewardj/). Or, more to the point,
it allows you to check your DVB software with valgrind
without getting all those "unknown ioctl" warnings.

Notes:
- only frontend and demux ioctls are currently implemented
- some ioctls take structs as arguments; due to padding, valgrind
  will complain about uninitialized data passed to the ioctl unless
  you memset() the whole struct to some defined value

Johannes Stezenbach <js@convergence.de>
