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net: ipv6: add NLM_F_APPEND in notifications when applicable 

IPv6 does not set the NLM_F_APPEND flag in notifications to signal that
a NEWROUTE is an append versus a new route or a replaced one. Add the
flag if the request has it.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2017-01-31 16:51:37 -08:00 committed by David S. Miller
parent f696186203
commit 1f5e29ce79
1 changed files with 3 additions and 0 deletions
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3
net/ipv6/ip6_fib.c
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@ -746,6 +746,9 @@ static int fib6_add_rt2node(struct fib6_node *fn, struct rt6_info *rt,
u16 nlflags = NLM_F_EXCL;
int err;
if (info->nlh && (info->nlh->nlmsg_flags & NLM_F_APPEND))
nlflags |= NLM_F_APPEND;
ins = &fn->leaf;
for (iter = fn->leaf; iter; iter = iter->dst.rt6_next) {