diff --git a/sys/conf/options b/sys/conf/options
--- a/sys/conf/options
+++ b/sys/conf/options
@@ -143,7 +143,7 @@
 IFLIB		opt_iflib.h
 KDTRACE_HOOKS	opt_global.h
 KDTRACE_FRAME	opt_kdtrace.h
-KDTRACE_NO_MIB_SDT	opt_global.h
+KDTRACE_MIB_SDT	opt_global.h
 KN_HASHSIZE	opt_kqueue.h
 KSTACK_MAX_PAGES
 KSTACK_PAGES
diff --git a/sys/conf/std.debug b/sys/conf/std.debug
--- a/sys/conf/std.debug
+++ b/sys/conf/std.debug
@@ -15,3 +15,4 @@
 options 	MALLOC_DEBUG_MAXZONES=8	# Separate malloc(9) zones
 options 	VERBOSE_SYSINIT=0	# Support debug.verbose_sysinit, off by default
 options		ALT_BREAK_TO_DEBUGGER	# Enter debugger on keyboard escape sequence
+options		KDTRACE_MIB_SDT		# Add SDT probes to network counters
diff --git a/sys/conf/std.nodebug b/sys/conf/std.nodebug
--- a/sys/conf/std.nodebug
+++ b/sys/conf/std.nodebug
@@ -15,6 +15,7 @@
 nooptions	KCOV
 nooptions	MALLOC_DEBUG_MAXZONES
 nooptions	QUEUE_MACRO_DEBUG_TRASH
+nooptions	KDTRACE_MIB_SDT
 
 # Net80211 debugging
 nooptions	IEEE80211_DEBUG
diff --git a/sys/netinet/in_kdtrace.h b/sys/netinet/in_kdtrace.h
--- a/sys/netinet/in_kdtrace.h
+++ b/sys/netinet/in_kdtrace.h
@@ -54,7 +54,7 @@
 SDT_PROVIDER_DECLARE(udp);
 SDT_PROVIDER_DECLARE(udplite);
 
-#ifndef KDTRACE_NO_MIB_SDT
+#ifdef KDTRACE_MIB_SDT
 SDT_PROVIDER_DECLARE(mib);
 
 SDT_PROBE_DECLARE(mib, ip, count, ips_total);
diff --git a/sys/netinet/in_kdtrace.c b/sys/netinet/in_kdtrace.c
--- a/sys/netinet/in_kdtrace.c
+++ b/sys/netinet/in_kdtrace.c
@@ -36,7 +36,7 @@
 SDT_PROVIDER_DEFINE(udp);
 SDT_PROVIDER_DEFINE(udplite);
 
-#ifndef KDTRACE_NO_MIB_SDT
+#ifdef KDTRACE_MIB_SDT
 #define MIB_PROBE_IP(name) \
     SDT_PROBE_DEFINE1(mib, ip, count, name, \
         "int")
diff --git a/sys/sys/sdt.h b/sys/sys/sdt.h
--- a/sys/sys/sdt.h
+++ b/sys/sys/sdt.h
@@ -359,7 +359,7 @@
 	    (uintptr_t)arg0, (uintptr_t)arg1, (uintptr_t)arg2,		\
 	    (uintptr_t)arg3, (uintptr_t)arg4, (uintptr_t)arg5)
 
-#ifndef KDTRACE_NO_MIB_SDT
+#ifdef KDTRACE_MIB_SDT
 #define	MIB_SDT_PROBE1(...)	SDT_PROBE1(mib, __VA_ARGS__)
 #define	MIB_SDT_PROBE2(...)	SDT_PROBE2(mib, __VA_ARGS__)
 #else