D20011.diff
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	Index: head/sys/netinet6/ip6_id.c
	===================================================================
	--- head/sys/netinet6/ip6_id.c
	+++ head/sys/netinet6/ip6_id.c
	@@ -89,6 +89,7 @@
	#include <sys/types.h>
	#include <sys/param.h>
	#include <sys/kernel.h>
	+#include <sys/random.h>
	#include <sys/socket.h>
	#include <sys/libkern.h>

	@@ -257,6 +258,16 @@
	u_int32_t
	ip6_randomflowlabel(void)
	{
	+
	+ /*
	+ * It's ok to emit zero flow labels early, before random is available
	+ * (seeded). RFC 6437:
	+ *
	+ * "A Flow Label of zero is used to indicate packets that have not been
	+ * labeled."
	+ */
	+ if (__predict_false(!is_random_seeded()))
	+ return (0);

	return randomid(&randomtab_20) & 0xfffff;
	}