diff --git a/zebra/irdp_main.c b/zebra/irdp_main.c
index 5ee50e7..7b91696 100644
--- a/zebra/irdp_main.c
+++ b/zebra/irdp_main.c
@@ -125,7 +125,7 @@
     return ret;
   };
   
-  ret = setsockopt_pktinfo (AF_INET, irdp_sock, 1);
+  ret = setsockopt_ifindex (AF_INET, irdp_sock, 1);
   if (ret < 0) {
     zlog_warn ("IRDP: can't do irdp sockopt %s", strerror(errno));
     return ret;