[PATCH iproute2] ip route: Add annotation for replaced routes

If NLM_F_REPLACE flag is set then a route is replacing an existing route.
Prepend "Replaced " to these routes similar to how "Deleted " is added
to deleted routes.

Signed-off-by: David Ahern <redacted>
---
 ip/iproute.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ip/iproute.c b/ip/iproute.c
index 8224d7ffa94b..28b47bcb7312 100644
--- a/ip/iproute.c
+++ b/ip/iproute.c

@@ -363,6 +363,8 @@ int print_route(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
 			return 0;
 	}
 
+	if (n->nlmsg_flags & NLM_F_REPLACE)
+		fprintf(fp, "Replaced ");
 	if (n->nlmsg_type == RTM_DELROUTE)
 		fprintf(fp, "Deleted ");
 	if ((r->rtm_type != RTN_UNICAST || show_details > 0) && !filter.type)

-- 
2.1.4

On Thu,  9 Jun 2016 13:05:42 -0700
David Ahern [off-list ref] wrote:

If NLM_F_REPLACE flag is set then a route is replacing an existing route.
Prepend "Replaced " to these routes similar to how "Deleted " is added
to deleted routes.

Signed-off-by: David Ahern <redacted>

Why just routes, there are several other places where Replaced entries could
be returned?

On 6/14/16 3:34 PM, Stephen Hemminger wrote:

On Thu,  9 Jun 2016 13:05:42 -0700
David Ahern [off-list ref] wrote:

quoted

If NLM_F_REPLACE flag is set then a route is replacing an existing route.
Prepend "Replaced " to these routes similar to how "Deleted " is added
to deleted routes.

Signed-off-by: David Ahern <redacted>

Why just routes, there are several other places where Replaced entries could
be returned?

b/c that's the use case I was investigating. :-)

Will add the others.