Reduce multicast stream packet ttl to 2 from 16

Change-Id: I853cdb3dcd08694556d51d5aaeb2e5ee65510e57
diff --git a/hdhomerun_tuner.c b/hdhomerun_tuner.c
index aa47f90..ae837b9 100644
--- a/hdhomerun_tuner.c
+++ b/hdhomerun_tuner.c
@@ -111,7 +111,7 @@
   }
 
   char target[64];
-  snprintf( target, sizeof(target), "%s ttl-16",stream_target );
+  snprintf( target, sizeof(target), "%s ttl-2",stream_target );
   ret = hdhomerun_device_set_tuner_target( hd, target );
   if ( ret < 0 ) {
     printf( "hdhomerun failed set target %s  ret:%d\n", target, ret );