diff --git a/lib/ipv4.h b/lib/ipv4.h
index 87e08742..5cb2835e 100644
--- a/lib/ipv4.h
+++ b/lib/ipv4.h
@@ -77,4 +77,6 @@ static inline int ipv4_compare(u32 x, u32 y)
   return (x > y) - (x < y);
 }
 
+#define IP_PREC_INTERNET_CONTROL 0xc0
+
 #endif
diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index 2836561f..47c87f88 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -229,7 +229,7 @@ ospf_open_socket(struct proto *p, struct ospf_iface *ifa)
     mcsk->dport=OSPF_PROTO;
     mcsk->saddr=AllSPFRouters;
     mcsk->daddr=AllSPFRouters;
-    mcsk->tos=OSPF_IP_PRI;
+    mcsk->tos=IP_PREC_INTERNET_CONTROL;
     mcsk->ttl=1;
     mcsk->rx_hook=ospf_rx_hook;
     mcsk->tx_hook=ospf_tx_hook;
diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h
index 9d45993e..19c9eeb1 100644
--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -12,7 +12,6 @@
 #define OSPF_PROTO 89
 #ifndef IPV6
 #define OSPF_VERSION 2
-#define OSPF_IP_PRI 0xc0
 #define AllSPFRouters ipa_from_u32(0xe0000005)	/* 224.0.0.5 */
 #define AllDRouters ipa_from_u32(0xe0000006)	/* 224.0.0.6 */
 #else
diff --git a/proto/rip/rip.c b/proto/rip/rip.c
index a3ddf615..a2457b79 100644
--- a/proto/rip/rip.c
+++ b/proto/rip/rip.c
@@ -488,6 +488,7 @@ new_iface(struct proto *p, struct iface *new, unsigned long flags, struct iface_
   rif->sock->daddr = IPA_NONE;
   rif->sock->dport = P_CF->port;
   rif->sock->ttl = 1; /* FIXME: care must be taken not to send requested responses from this socket */
+  rif->sock->tos = IP_PREC_INTERNET_CONTROL;
 
   if (flags & IF_BROADCAST)
     rif->sock->daddr = new->addr->brd;