Index: gencode.c
===================================================================
RCS file: /cvs/src/lib/libpcap/gencode.c,v
retrieving revision 1.60
diff -u -p -r1.60 gencode.c
--- gencode.c	13 Feb 2022 20:02:30 -0000	1.60
+++ gencode.c	22 Mar 2022 04:29:40 -0000
@@ -3230,7 +3246,7 @@ gen_pf_ifname(char *ifname)
 		    len - 1);
 		/* NOTREACHED */
 	}
-	b0 = gen_bcmp(off, strlen(ifname), ifname);
+	b0 = gen_bcmp(off, strlen(ifname) + 1, ifname);
 	return (b0);
 }