From 1717699cd5130009b7cd6756e883d8582c1fe706 Mon Sep 17 00:00:00 2001
From: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Date: Thu, 12 Jun 2008 03:27:26 +0900
Subject: [PATCH] ipv6: Fail with appropriate error code when setting
 not-applicable sockopt.

IPV6_MULTICAST_HOPS, for example, is not valid for stream sockets.
Since they are virtually unavailable for stream sockets,
we should return ENOPROTOOPT instead of EINVAL.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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