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Date:   Fri, 22 Mar 2019 12:15:01 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Kalash Nainwal <kalash@...sta.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 3.18 088/134] net: Set rtm_table to RT_TABLE_COMPAT for ipv6 for tables > 255

3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kalash Nainwal <kalash@...sta.com>

[ Upstream commit 97f0082a0592212fc15d4680f5a4d80f79a1687c ]

Set rtm_table to RT_TABLE_COMPAT for ipv6 for tables > 255 to
keep legacy software happy. This is similar to what was done for
ipv4 in commit 709772e6e065 ("net: Fix routing tables with
id > 255 for legacy software").

Signed-off-by: Kalash Nainwal <kalash@...sta.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/ipv6/route.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -2558,7 +2558,7 @@ static int rt6_fill_node(struct net *net
 		table = rt->rt6i_table->tb6_id;
 	else
 		table = RT6_TABLE_UNSPEC;
-	rtm->rtm_table = table;
+	rtm->rtm_table = table < 256 ? table : RT_TABLE_COMPAT;
 	if (nla_put_u32(skb, RTA_TABLE, table))
 		goto nla_put_failure;
 	if (rt->rt6i_flags & RTF_REJECT) {


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