vec_validate (im->sw_if_counters, VNET_N_SIMPLE_INTERFACE_COUNTER - 1);
im->sw_if_counters[VNET_INTERFACE_COUNTER_DROP].name = "drops";
im->sw_if_counters[VNET_INTERFACE_COUNTER_PUNT].name = "punts";
vec_validate (im->sw_if_counters, VNET_N_SIMPLE_INTERFACE_COUNTER - 1);
im->sw_if_counters[VNET_INTERFACE_COUNTER_DROP].name = "drops";
im->sw_if_counters[VNET_INTERFACE_COUNTER_PUNT].name = "punts";