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-rw-r--r--pimd/pim_mroute.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/pimd/pim_mroute.c b/pimd/pim_mroute.c
index 7fc4f12d27..3015c4a61b 100644
--- a/pimd/pim_mroute.c
+++ b/pimd/pim_mroute.c
@@ -437,6 +437,28 @@ int pim_mroute_msg_wrvifwhole(int fd, struct interface *ifp, const char *buf)
pim_ifp->primary_address,
up->upstream_register);
up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE;
+ } else {
+ /*
+ * At this point pimd is connected to
+ * the source, it has a parent, we are not
+ * the RP and the SPTBIT should be set
+ * since we know *the* S,G is on the SPT.
+ * The first time this happens, let's cause
+ * an immediate join to go out so that
+ * the RP can trim this guy immediately
+ * if necessary, instead of waiting
+ * one join/prune send cycle
+ */
+ if (up->sptbit != PIM_UPSTREAM_SPTBIT_TRUE &&
+ up->parent &&
+ up->rpf.source_nexthop.interface !=
+ up->parent->rpf.source_nexthop
+ .interface) {
+ up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE;
+ pim_jp_agg_single_upstream_send(
+ &up->parent->rpf, up->parent,
+ true);
+ }
}
pim_upstream_keep_alive_timer_start(
up, pim_ifp->pim->keep_alive_time);