1 files changed, 4 insertions, 1 deletions
diff --git a/src/libsystemd-network/sd-ndisc.c b/src/libsystemd-network/sd-ndisc.c
index 0881973e7f..3bb06f6892 100644
--- a/src/libsystemd-network/sd-ndisc.c
+++ b/src/libsystemd-network/sd-ndisc.c
@@ -508,6 +508,9 @@ static int ndisc_router_advertisment_recv(sd_event_source *s, int fd, uint32_t r
                 return 0;
         }
 
+        if (!in_addr_is_link_local(AF_INET6, (const union in_addr_union*) &router.in6.sin6_addr))
+                return 0;
+
         if (ra->nd_ra_type != ND_ROUTER_ADVERT)
                 return 0;
 
@@ -628,7 +631,7 @@ int sd_ndisc_router_discovery_start(sd_ndisc *nd) {
         assert(nd->event);
 
         if (nd->state != NDISC_STATE_IDLE)
-                return -EINVAL;
+                return -EBUSY;
 
         if (nd->index < 1)
                 return -EINVAL;