RTM_NEWTCLASS 63 include/linux/rtnetlink.h RTM_NEWTCLASS = 40, RTM_NEWTCLASS 64 include/linux/rtnetlink.h #define RTM_NEWTCLASS RTM_NEWTCLASS RTM_NEWTCLASS 64 include/linux/rtnetlink.h #define RTM_NEWTCLASS RTM_NEWTCLASS