-XBT_PUBLIC_DATA(int) NS3_HOST_LEVEL; //host node for ns3
-
-XBT_PUBLIC_DATA(xbt_lib_t) link_lib;
-XBT_PUBLIC_DATA(int) SD_LINK_LEVEL; //Simdag level
-XBT_PUBLIC_DATA(int) SURF_LINK_LEVEL; //Surf level
-XBT_PUBLIC_DATA(int) NS3_LINK_LEVEL; //link for ns3