D58556.id183112.diff
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D58556.id183112.diff
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	diff --git a/sys/netinet6/ip6_var.h b/sys/netinet6/ip6_var.h
	--- a/sys/netinet6/ip6_var.h
	+++ b/sys/netinet6/ip6_var.h
	@@ -66,6 +66,24 @@
	#include <sys/epoch.h>

	#ifdef _KERNEL
	+/*
	+ * For IPv6 pseudo header checksum; to be used by TCP-MD5,
	+ * and for OCF source level compatibility with OpenBSD.
	+ */
	+struct ip6_hdr_pseudo {
	+ struct in6_addr ip6ph_src;
	+ struct in6_addr ip6ph_dst;
	+ uint32_t ip6ph_len;
	+ uint8_t ip6ph_zero[3];
	+ uint8_t ip6ph_nxt;
	+} __aligned(4);
	+
	+#ifdef INVARIANTS
	+/* Aligned size of pseudo-header must equal size of IPv6 header. */
	+_Static_assert(sizeof(struct ip6_hdr_pseudo) == 40,
	+ "IPv6 pseudo-header alignment failure");
	+#endif
	+
	struct ip6asfrag; /* frag6.c */
	TAILQ_HEAD(ip6fraghead, ip6asfrag);