D31300.diff
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D31300.diff
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	diff --git a/sbin/dumpon/dumpon.c b/sbin/dumpon/dumpon.c
	--- a/sbin/dumpon/dumpon.c
	+++ b/sbin/dumpon/dumpon.c
	@@ -550,6 +550,24 @@
	} else
	dev = argv[0];
	netdump = false;
	+
	+ if (strcmp(dev, _PATH_DEVNULL) == 0) {
	+ /*
	+ * Netdump has its own configuration tracking that
	+ * is not removed when using /dev/null.
	+ */
	+ fd = open(_PATH_NETDUMP, O_RDONLY);
	+ if (fd != -1) {
	+ bzero(&ndconf, sizeof(ndconf));
	+ ndconf.kda_index = KDA_REMOVE_ALL;
	+ ndconf.kda_af = AF_INET;
	+ error = ioctl(fd, DIOCSKERNELDUMP, &ndconf);
	+ if (error != 0)
	+ err(1, "ioctl(%s, DIOCSKERNELDUMP)",
	+ _PATH_NETDUMP);
	+ close(fd);
	+ }
	+ }
	} else
	usage();