From 5e0fa3b8148905ec336f35de5a29ef4fc93dd8a7 Mon Sep 17 00:00:00 2001
From: tuexen <tuexen@FreeBSD.org>
Date: Mon, 28 May 2018 13:31:47 +0000
Subject: [PATCH] Use correct mask. Introduced in
 https://svnweb.freebsd.org/changeset/base/333603. Thanks to Irene Ruengler
 for testing and reporting the issue.

MFC after:		1 week
X-MFC-with:		333603
---
 sys/netinet/sctputil.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sys/netinet/sctputil.c b/sys/netinet/sctputil.c
index 6c251deb35fa..98b11bf65a88 100644
--- a/sys/netinet/sctputil.c
+++ b/sys/netinet/sctputil.c
@@ -831,7 +831,7 @@ sctp_get_prev_mtu(uint32_t val)
 {
 	uint32_t i;
 
-	val &= 0x00000003;
+	val &= 0xfffffffc;
 	if (val <= sctp_mtu_sizes[0]) {
 		return (val);
 	}
@@ -857,7 +857,7 @@ sctp_get_next_mtu(uint32_t val)
 	/* select another MTU that is just bigger than this one */
 	uint32_t i;
 
-	val &= 0x00000003;
+	val &= 0xfffffffc;
 	for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
 		if (val < sctp_mtu_sizes[i]) {
 			KASSERT((sctp_mtu_sizes[i] & 0x00000003) == 0,