static void SetupDoubleFan()
{
var heads = new Bridge[DFAN_OUT];
for (int i = 0; i < DFAN_OUT; ++i)
heads[i] = new Bridge();
var multiplexer = new Bridge[DFAN_OUT];
for (int i = 0; i < DFAN_OUT; ++i)
{
heads[i].Links.Add(multiplexer);
multiplexer[i] = new Bridge();
}
logger.InfoFormat("GC bridge: \"double fan\" setup done, FANOUT={0}", DFAN_OUT);
}