Index: gencode.c
===================================================================
RCS file: /cvs/src/lib/libpcap/gencode.c,v
retrieving revision 1.52
diff -u -p -r1.52 gencode.c
--- gencode.c	9 Dec 2018 15:07:06 -0000	1.52
+++ gencode.c	20 Jul 2020 23:59:44 -0000
@@ -770,7 +770,7 @@ init_linktype(type)
 		return;
 
 	case DLT_LOOP:
-		off_linktype = -1;
+		off_linktype = 0;
 		off_nl = 4;
 		return;