diff --git a/src/include/netif/ppp/ppp.h b/src/include/netif/ppp/ppp.h
index 1ed10298..99b8aeae 100644
--- a/src/include/netif/ppp/ppp.h
+++ b/src/include/netif/ppp/ppp.h
@@ -482,6 +482,13 @@ void ppp_set_auth(ppp_pcb *pcb, u8_t authtype, const char *user, const char *pas
 #endif /* LWIP_DNS */
 #endif /* PPP_IPV4_SUPPORT */
 
+/*
+ * Wait for up to intval milliseconds for a valid PPP packet from the peer.
+ * At the end of this  time, or when a valid PPP packet is received from the
+ * peer, we commence negotiation by sending our first LCP packet.
+ */
+#define ppp_set_listen_time(ppp, intval) (ppp->settings.listen_time = intval)
+
 /*
  * Set a PPP interface as the default network interface
  * (used to output all packets for which no specific route is found).