commit 0259ae79db541a18749616ef66adf1378ed40046
author Guy Harris <guy@alum.mit.edu> Mon Dec 10 23:26:25 2018 -0800
committer Guy Harris <guy@alum.mit.edu> Mon Dec 10 23:26:25 2018 -0800
tree 442d6c1002a5bcc3e5a8d9d40c9ccf10d9bc856f
parent 7df90fa2a2b317d66750a8e595b695e6604672ac

Umm, wrong.

netdissect.h

diff --git a/netdissect.h b/netdissect.h
index 36adf85..caf18dc 100644
--- a/netdissect.h
+++ b/netdissect.h
@@ -375,7 +375,7 @@
  * them a char, as those might be in the range -128 to 127.
  */
 #define ND_TOLOWER(c)	(((c) >= 'A' && (c) <= 'Z') ? (c) - 'A' + 'a' : (c))
-#define ND_TOUPPER(c)	(((c) >= 'a' && (c) <= 'z') ? (c) - 'a' + 'z' : (c))
+#define ND_TOUPPER(c)	(((c) >= 'a' && (c) <= 'z') ? (c) - 'a' + 'A' : (c))
 
 #if (defined(__i386__) || defined(_M_IX86) || defined(__X86__) || defined(__x86_64__) || defined(_M_X64)) || \
     (defined(__arm__) || defined(_M_ARM) || defined(__aarch64__)) || \