diff --git a/src/api/pppapi.c b/src/api/pppapi.c
index 40905362..07fc0130 100644
--- a/src/api/pppapi.c
+++ b/src/api/pppapi.c
@@ -148,8 +148,8 @@ int pppapi_over_ethernet_open(ppp_pcb *pcb, struct netif *ethif, const char *ser
  */
 static void pppapi_do_ppp_over_l2tp_open(struct pppapi_msg_msg *msg) {
 
-  msg->err = ppp_over_l2tp_open(msg->ppp, msg->msg.l2tpopen.ipaddr,
-		  msg->msg.l2tpopen.port,
+  msg->err = ppp_over_l2tp_open(msg->ppp,
+		  msg->msg.l2tpopen.netif, msg->msg.l2tpopen.ipaddr, msg->msg.l2tpopen.port,
 #if PPPOL2TP_AUTH_SUPPORT
 		  msg->msg.l2tpopen.secret,
 		  msg->msg.l2tpopen.secret_len,
@@ -164,11 +164,13 @@ static void pppapi_do_ppp_over_l2tp_open(struct pppapi_msg_msg *msg) {
  * Call ppp_over_l2tp_open() in a thread-safe way by running that function inside the
  * tcpip_thread context.
  */
-int pppapi_over_l2tp_open(ppp_pcb *pcb, ip_addr_t *ipaddr, u16_t port, u8_t *secret, u8_t secret_len,
+int pppapi_over_l2tp_open(ppp_pcb *pcb, struct netif *netif, ip_addr_t *ipaddr, u16_t port,
+		u8_t *secret, u8_t secret_len,
                 ppp_link_status_cb_fn link_status_cb, void *link_status_ctx) {
   struct pppapi_msg msg;
   msg.function = pppapi_do_ppp_over_l2tp_open;
   msg.msg.ppp = pcb;
+  msg.msg.msg.l2tpopen.netif = netif;
   msg.msg.msg.l2tpopen.ipaddr = ipaddr;
   msg.msg.msg.l2tpopen.port = port;
 #if PPPOL2TP_AUTH_SUPPORT
diff --git a/src/include/lwip/pppapi.h b/src/include/lwip/pppapi.h
index 4b139ab8..6b2897a7 100644
--- a/src/include/lwip/pppapi.h
+++ b/src/include/lwip/pppapi.h
@@ -69,6 +69,7 @@ struct pppapi_msg_msg {
 #endif /* PPPOE_SUPPORT */
 #if PPPOL2TP_SUPPORT
     struct {
+      struct netif *netif;
       ip_addr_t *ipaddr;
       u16_t port;
 #if PPPOL2TP_AUTH_SUPPORT
@@ -119,7 +120,8 @@ int pppapi_over_ethernet_open(ppp_pcb *pcb, struct netif *ethif, const char *ser
 		void *link_status_ctx);
 #endif /* PPPOE_SUPPORT */
 #if PPPOL2TP_SUPPORT
-int pppapi_over_l2tp_open(ppp_pcb *pcb, ip_addr_t *ipaddr, u16_t port, u8_t *secret, u8_t secret_len,
+int pppapi_over_l2tp_open(ppp_pcb *pcb, struct netif *netif, ip_addr_t *ipaddr, u16_t port,
+		u8_t *secret, u8_t secret_len,
                 ppp_link_status_cb_fn link_status_cb, void *link_status_ctx);
 #endif /* PPPOL2TP_SUPPORT */
 int pppapi_close(ppp_pcb *pcb);
diff --git a/src/include/netif/pppol2tp.h b/src/include/netif/pppol2tp.h
index 3dded088..c7741431 100644
--- a/src/include/netif/pppol2tp.h
+++ b/src/include/netif/pppol2tp.h
@@ -172,6 +172,7 @@ struct pppol2tp_pcb_s {
   u8_t phase;                  /* L2TP phase */
   void (*link_status_cb)(ppp_pcb *pcb, int status);
   struct udp_pcb *udp;         /* UDP L2TP Socket */
+  struct netif *netif;         /* Output interface, used as a default route */
   ip_addr_t remote_ip;         /* LNS IP Address */
   u16_t remote_port;           /* LNS port */
 #if PPPOL2TP_AUTH_SUPPORT
@@ -205,7 +206,7 @@ err_t pppol2tp_create(ppp_pcb *ppp, void (*link_status_cb)(ppp_pcb *pcb, int sta
 err_t pppol2tp_destroy(pppol2tp_pcb *l2tp);
 
 /* Be a LAC, connect to a LNS. */
-err_t pppol2tp_connect(pppol2tp_pcb *l2tp, ip_addr_t *ipaddr, u16_t port);
+err_t pppol2tp_connect(pppol2tp_pcb *l2tp, struct netif *netif, ip_addr_t *ipaddr, u16_t port);
 
 /* Disconnect */
 void pppol2tp_disconnect(pppol2tp_pcb *l2tp);
diff --git a/src/netif/ppp/ppp.c b/src/netif/ppp/ppp.c
index af2cadd2..66cccbe7 100644
--- a/src/netif/ppp/ppp.c
+++ b/src/netif/ppp/ppp.c
@@ -284,6 +284,13 @@ ppp_pcb *ppp_new(void) {
     for (i = 0; (protp = protocols[i]) != NULL; ++i)
         (*protp->init)(pcb);
 
+    if (!netif_add(&pcb->netif, &pcb->addrs.our_ipaddr, &pcb->addrs.netmask,
+                  &pcb->addrs.his_ipaddr, (void *)pcb, ppp_netif_init_cb, NULL)) {
+      memp_free(MEMP_PPP_PCB, pcb);
+      PPPDEBUG(LOG_ERR, ("ppp_new[%d]: netif_add failed\n", pcb->num));
+      return NULL;
+    }
+
     return pcb;
 }
 
@@ -428,7 +435,8 @@ int ppp_over_ethernet_open(ppp_pcb *pcb, struct netif *ethif, const char *servic
 #if PPPOL2TP_SUPPORT
 static void ppp_over_l2tp_link_status_cb(ppp_pcb *pcb, int state);
 
-int ppp_over_l2tp_open(ppp_pcb *pcb, ip_addr_t *ipaddr, u16_t port, u8_t *secret, u8_t secret_len,
+int ppp_over_l2tp_open(ppp_pcb *pcb, struct netif *netif, ip_addr_t *ipaddr, u16_t port,
+		u8_t *secret, u8_t secret_len,
 		ppp_link_status_cb_fn link_status_cb, void *link_status_ctx) {
 
   lcp_options *wo = &pcb->lcp_wantoptions;
@@ -457,7 +465,7 @@ int ppp_over_l2tp_open(ppp_pcb *pcb, ip_addr_t *ipaddr, u16_t port, u8_t *secret
   }
 
   new_phase(pcb, PHASE_INITIALIZE);
-  if(!pppol2tp_connect(pcb->l2tp_pcb, ipaddr, port) != ERR_OK) {
+  if(!pppol2tp_connect(pcb->l2tp_pcb, netif, ipaddr, port) != ERR_OK) {
     return PPPERR_OPEN;
   }
   return PPPERR_NONE;
@@ -874,7 +882,6 @@ static err_t ppp_netif_init_cb(struct netif *netif) {
 #if PPP_IPV6_SUPPORT
   netif->output_ip6 = ppp_netif_output_ip6;
 #endif /* PPP_IPV6_SUPPORT */
-  netif->mtu = netif_get_mtu((ppp_pcb*)netif->state);
   netif->flags = NETIF_FLAG_POINTTOPOINT | NETIF_FLAG_LINK_UP;
 #if LWIP_NETIF_HOSTNAME
   /* @todo: Initialize interface hostname */
@@ -1017,7 +1024,7 @@ static err_t ppp_netif_output(struct netif *netif, struct pbuf *pb, u_short prot
   }
 
   /* Check that the link is up. */
-  if (pcb->phase == PHASE_DEAD) {
+  if (!pcb->if_up) {
     PPPDEBUG(LOG_ERR, ("ppp_netif_output[%d]: link not up\n", pcb->num));
     LINK_STATS_INC(link.rterr);
     LINK_STATS_INC(link.drop);
@@ -1905,6 +1912,7 @@ void ppp_link_terminated(ppp_pcb *pcb) {
 static void ppp_destroy(ppp_pcb *pcb) {
 
   PPPDEBUG(LOG_DEBUG, ("ppp_destroy: unit %d\n", pcb->num));
+  netif_remove(&pcb->netif);
   memp_free(MEMP_PPP_PCB, pcb);
 }
 
@@ -2117,22 +2125,14 @@ int cdns(ppp_pcb *pcb, u32_t ns1, u32_t ns2) {
  */
 int sifup(ppp_pcb *pcb) {
 
-  if(!pcb->if_up) {
-    if(!netif_add(&pcb->netif, &pcb->addrs.our_ipaddr, &pcb->addrs.netmask,
-                  &pcb->addrs.his_ipaddr, (void *)pcb, ppp_netif_init_cb, NULL)) {
-      PPPDEBUG(LOG_ERR, ("sifup[%d]: netif_add failed\n", pcb->num));
-      return 0;
-    }
-  } else {
-    netif_set_addr(&pcb->netif, &pcb->addrs.our_ipaddr, &pcb->addrs.netmask,
-                   &pcb->addrs.his_ipaddr);
-  }
-
+  netif_set_addr(&pcb->netif, &pcb->addrs.our_ipaddr, &pcb->addrs.netmask,
+                 &pcb->addrs.his_ipaddr);
 #if PPP_IPV6_SUPPORT
   ip6_addr_copy(pcb->netif.ip6_addr[0], pcb->addrs.our6_ipaddr);
   netif_ip6_addr_set_state(&pcb->netif, 0, IP6_ADDR_PREFERRED);
 #endif /* PPP_IPV6_SUPPORT */
 
+  pcb->netif.mtu = netif_get_mtu(pcb);
   netif_set_up(&pcb->netif);
   pcb->if_up = 1;
   pcb->err_code = PPPERR_NONE;
@@ -2157,7 +2157,6 @@ int sifdown(ppp_pcb *pcb) {
   pcb->if_up = 0;
   /* make sure the netif status callback is called */
   netif_set_down(&pcb->netif);
-  netif_remove(&pcb->netif);
   PPPDEBUG(LOG_DEBUG, ("sifdown: unit %d: err_code=%d\n", pcb->num, pcb->err_code));
   if (pcb->link_status_cb)
     pcb->link_status_cb(pcb, PPPERR_CONNECT, pcb->link_status_ctx);
diff --git a/src/netif/ppp/ppp.h b/src/netif/ppp/ppp.h
index bc7422df..71e2bca6 100644
--- a/src/netif/ppp/ppp.h
+++ b/src/netif/ppp/ppp.h
@@ -481,7 +481,8 @@ int ppp_over_ethernet_open(ppp_pcb *pcb, struct netif *ethif, const char *servic
 /*
  * Open a new PPP Over L2TP (PPPoL2TP) connection.
  */
-int ppp_over_l2tp_open(ppp_pcb *pcb, ip_addr_t *ipaddr, u16_t port, u8_t *secret, u8_t secret_len,
+int ppp_over_l2tp_open(ppp_pcb *pcb, struct netif *netif, ip_addr_t *ipaddr, u16_t port,
+		u8_t *secret, u8_t secret_len,
 		ppp_link_status_cb_fn link_status_cb, void *link_status_ctx);
 #endif /* PPPOL2TP_SUPPORT */
 
@@ -512,6 +513,8 @@ int ppp_ioctl(ppp_pcb *pcb, int cmd, void *arg);
 void pppos_input(ppp_pcb *pcb, u_char* data, int len);
 #endif /* PPPOS_SUPPORT && !PPP_INPROC_OWNTHREAD */
 
+/* Get the PPP netif interface */
+#define ppp_netif(ppp)               (&(ppp)->netif)
 
 #if LWIP_NETIF_STATUS_CALLBACK
 /* Set an lwIP-style status-callback for the selected PPP device */
diff --git a/src/netif/ppp/pppol2tp.c b/src/netif/ppp/pppol2tp.c
index f6940875..a911ba2f 100644
--- a/src/netif/ppp/pppol2tp.c
+++ b/src/netif/ppp/pppol2tp.c
@@ -55,6 +55,7 @@
 
 #include "lwip/err.h"
 #include "lwip/memp.h"
+#include "lwip/netif.h"
 #include "lwip/udp.h"
 
 #include "ppp_impl.h"
@@ -132,13 +133,14 @@ err_t pppol2tp_destroy(pppol2tp_pcb *l2tp) {
 }
 
 /* Be a LAC, connect to a LNS. */
-err_t pppol2tp_connect(pppol2tp_pcb *l2tp, ip_addr_t *ipaddr, u16_t port) {
+err_t pppol2tp_connect(pppol2tp_pcb *l2tp, struct netif *netif, ip_addr_t *ipaddr, u16_t port) {
   err_t err;
 
   if (l2tp->phase != PPPOL2TP_STATE_INITIAL) {
     return ERR_VAL;
   }
 
+  l2tp->netif = netif;
   ip_addr_set(&l2tp->remote_ip, ipaddr);
   l2tp->remote_port = l2tp->tunnel_port = port;
 
@@ -743,7 +745,11 @@ static err_t pppol2tp_send_sccrq(pppol2tp_pcb *l2tp) {
   }
 #endif /* PPPOL2TP_AUTH_SUPPORT */
 
-  udp_sendto(l2tp->udp, pb, &l2tp->remote_ip, l2tp->remote_port);
+  if(l2tp->netif) {
+    udp_sendto_if(l2tp->udp, pb, &l2tp->remote_ip, l2tp->remote_port, l2tp->netif);
+  } else {
+    udp_sendto(l2tp->udp, pb, &l2tp->remote_ip, l2tp->remote_port);
+  }
   pbuf_free(pb);
   return ERR_OK;
 }
@@ -796,7 +802,11 @@ static err_t pppol2tp_send_scccn(pppol2tp_pcb *l2tp, u16_t ns) {
   }
 #endif /* PPPOL2TP_AUTH_SUPPORT */
 
-  udp_sendto(l2tp->udp, pb, &l2tp->remote_ip, l2tp->tunnel_port);
+  if(l2tp->netif) {
+    udp_sendto_if(l2tp->udp, pb, &l2tp->remote_ip, l2tp->remote_port, l2tp->netif);
+  } else {
+    udp_sendto(l2tp->udp, pb, &l2tp->remote_ip, l2tp->remote_port);
+  }
   pbuf_free(pb);
   return ERR_OK;
 }
@@ -847,7 +857,11 @@ static err_t pppol2tp_send_icrq(pppol2tp_pcb *l2tp, u16_t ns) {
   serialnumber = magic();
   PUTLONG(serialnumber, p); /* Attribute value: Serial number */
 
-  udp_sendto(l2tp->udp, pb, &l2tp->remote_ip, l2tp->tunnel_port);
+  if(l2tp->netif) {
+    udp_sendto_if(l2tp->udp, pb, &l2tp->remote_ip, l2tp->remote_port, l2tp->netif);
+  } else {
+    udp_sendto(l2tp->udp, pb, &l2tp->remote_ip, l2tp->remote_port);
+  }
   pbuf_free(pb);
   return ERR_OK;
 }
@@ -896,7 +910,11 @@ static err_t pppol2tp_send_iccn(pppol2tp_pcb *l2tp, u16_t ns) {
   PUTSHORT(PPPOL2TP_AVPTYPE_TXCONNECTSPEED, p); /* Attribute type: TX Connect speed */
   PUTLONG(PPPOL2TP_TXCONNECTSPEED, p); /* Attribute value: TX Connect speed */
 
-  udp_sendto(l2tp->udp, pb, &l2tp->remote_ip, l2tp->tunnel_port);
+  if(l2tp->netif) {
+    udp_sendto_if(l2tp->udp, pb, &l2tp->remote_ip, l2tp->remote_port, l2tp->netif);
+  } else {
+    udp_sendto(l2tp->udp, pb, &l2tp->remote_ip, l2tp->remote_port);
+  }
   pbuf_free(pb);
   return ERR_OK;
 }
@@ -927,7 +945,11 @@ static err_t pppol2tp_send_zlb(pppol2tp_pcb *l2tp, u16_t ns) {
   PUTSHORT(ns, p); /* NS Sequence number - to peer */
   PUTSHORT(l2tp->peer_ns+1, p); /* NR Sequence number - expected for peer */
 
-  udp_sendto(l2tp->udp, pb, &l2tp->remote_ip, l2tp->tunnel_port);
+  if(l2tp->netif) {
+    udp_sendto_if(l2tp->udp, pb, &l2tp->remote_ip, l2tp->remote_port, l2tp->netif);
+  } else {
+    udp_sendto(l2tp->udp, pb, &l2tp->remote_ip, l2tp->remote_port);
+  }
   pbuf_free(pb);
   return ERR_OK;
 }
@@ -976,7 +998,11 @@ static err_t pppol2tp_send_stopccn(pppol2tp_pcb *l2tp, u16_t ns) {
   PUTSHORT(PPPOL2TP_AVPTYPE_RESULTCODE, p); /* Attribute type: Result code */
   PUTSHORT(PPPOL2TP_RESULTCODE, p); /* Attribute value: Result code */
 
-  udp_sendto(l2tp->udp, pb, &l2tp->remote_ip, l2tp->tunnel_port);
+  if(l2tp->netif) {
+    udp_sendto_if(l2tp->udp, pb, &l2tp->remote_ip, l2tp->remote_port, l2tp->netif);
+  } else {
+    udp_sendto(l2tp->udp, pb, &l2tp->remote_ip, l2tp->remote_port);
+  }
   pbuf_free(pb);
   return ERR_OK;
 }
@@ -1004,7 +1030,11 @@ err_t pppol2tp_xmit(pppol2tp_pcb *l2tp, struct pbuf *pb) {
   PUTSHORT(l2tp->source_tunnel_id, p); /* Tunnel Id */
   PUTSHORT(l2tp->source_session_id, p); /* Session Id */
 
-  udp_sendto(l2tp->udp, pb, &l2tp->remote_ip, l2tp->tunnel_port);
+  if(l2tp->netif) {
+    udp_sendto_if(l2tp->udp, pb, &l2tp->remote_ip, l2tp->remote_port, l2tp->netif);
+  } else {
+    udp_sendto(l2tp->udp, pb, &l2tp->remote_ip, l2tp->remote_port);
+  }
   pbuf_free(pb);
   return ERR_OK;
 }