RHBZ #244606: Correctly handle -n 0/32 to allow the user to disable reporting
bogons from 0.0.0.0.
diff -Naur arpwatch-3.1-original/arpwatch.c arpwatch-3.1/arpwatch.c
--- arpwatch-3.1-original/arpwatch.c 2019-11-30 13:35:23.000000000 -0500
+++ arpwatch-3.1/arpwatch.c 2020-11-07 12:10:53.357839069 -0500
@@ -814,10 +814,12 @@
/* XXX hack */
n = ntohl(inet_addr(tstr));
- while ((n & 0xff000000) == 0) {
- n <<= 8;
- if (n == 0)
- return (0);
+ if (n || width != 32) {
+ while ((n & 0xff000000) == 0) {
+ n <<= 8;
+ if (n == 0)
+ return (0);
+ }
}
n = htonl(n);