diff --git a/src/netif/ppp/fsm.c b/src/netif/ppp/fsm.c
index 84d7ccaf..b022e312 100644
--- a/src/netif/ppp/fsm.c
+++ b/src/netif/ppp/fsm.c
@@ -70,9 +70,6 @@ static void fsm_sconfreq(fsm *f, int retransmit);
 
 #define PROTO_NAME(f)	((f)->callbacks->proto_name)
 
-int peer_mru[NUM_PPP];
-
-
 /*
  * fsm_init - Initialize fsm.
  *
@@ -714,8 +711,8 @@ static void fsm_sconfreq(fsm *f, int retransmit) {
     outp = outpacket_buf + PPP_HDRLEN + HEADERLEN;
     if( f->callbacks->cilen && f->callbacks->addci ){
 	cilen = (*f->callbacks->cilen)(f);
-	if( cilen > peer_mru[pcb->unit] - HEADERLEN )
-	    cilen = peer_mru[pcb->unit] - HEADERLEN;
+	if( cilen > pcb->peer_mru - HEADERLEN )
+	    cilen = pcb->peer_mru - HEADERLEN;
 	if (f->callbacks->addci)
 	    (*f->callbacks->addci)(f, outp, &cilen);
     } else
@@ -742,8 +739,8 @@ void fsm_sdata(fsm *f, u_char code, u_char id, u_char *data, int datalen) {
 
     /* Adjust length to be smaller than MTU */
     outp = outpacket_buf;
-    if (datalen > peer_mru[pcb->unit] - HEADERLEN)
-	datalen = peer_mru[pcb->unit] - HEADERLEN;
+    if (datalen > pcb->peer_mru - HEADERLEN)
+	datalen = pcb->peer_mru - HEADERLEN;
     if (datalen && data != outp + PPP_HDRLEN + HEADERLEN)
 	MEMCPY(outp + PPP_HDRLEN + HEADERLEN, data, datalen);
     outlen = datalen + HEADERLEN;
diff --git a/src/netif/ppp/fsm.h b/src/netif/ppp/fsm.h
index 217521fc..d02301ab 100644
--- a/src/netif/ppp/fsm.h
+++ b/src/netif/ppp/fsm.h
@@ -168,10 +168,5 @@ void fsm_protreject(fsm *f);
 void fsm_sdata(fsm *f, u_char code, u_char id, u_char *data, int datalen);
 
 
-/*
- * Variables
- */
-extern int peer_mru[];		/* currently negotiated peer MRU (per unit) */
-
 #endif /* FSM_H */
 #endif /* PPP_SUPPORT */
diff --git a/src/netif/ppp/lcp.c b/src/netif/ppp/lcp.c
index e30af511..c46ee2bb 100644
--- a/src/netif/ppp/lcp.c
+++ b/src/netif/ppp/lcp.c
@@ -495,7 +495,7 @@ void lcp_lowerup(ppp_pcb *pcb) {
 	|| ppp_recv_config(pcb, PPP_MRU, (lax_recv? 0: 0xffffffff),
 			   wo->neg_pcompression, wo->neg_accompression) < 0)
 	    return;
-    peer_mru[pcb->unit] = PPP_MRU;
+    pcb->peer_mru = PPP_MRU;
 
 #if PPPOS_SUPPORT
     ao->asyncmap = (u_long)xmit_accm[pcb->unit][0]
@@ -707,7 +707,7 @@ static void lcp_resetci(fsm *f) {
 #endif /* HAVE_MULTILINK */
     if (noendpoint)
 	ao->neg_endpoint = 0;
-    peer_mru[pcb->unit] = PPP_MRU;
+    pcb->peer_mru = PPP_MRU;
     auth_reset(pcb);
 }
 
@@ -2242,7 +2242,7 @@ static void lcp_up(fsm *f) {
 		    go->neg_pcompression, go->neg_accompression);
 
     if (ho->neg_mru)
-	peer_mru[pcb->unit] = ho->mru;
+	pcb->peer_mru = ho->mru;
 
     lcp_echo_lowerup(f->pcb);  /* Enable echo messages */
 
@@ -2267,7 +2267,7 @@ static void lcp_down(fsm *f) {
     ppp_recv_config(pcb, PPP_MRU,
 		    (go->neg_asyncmap? go->asyncmap: 0xffffffff),
 		    go->neg_pcompression, go->neg_accompression);
-    peer_mru[pcb->unit] = PPP_MRU;
+    pcb->peer_mru = PPP_MRU;
 }
 
 
diff --git a/src/netif/ppp/ppp.h b/src/netif/ppp/ppp.h
index 752f0c30..94b8e86e 100644
--- a/src/netif/ppp/ppp.h
+++ b/src/netif/ppp/ppp.h
@@ -443,6 +443,8 @@ typedef struct ppp_pcb_s {
   eap_state eap;
 #endif /* EAP_SUPPORT */
 
+  int peer_mru;         /* currently negotiated peer MRU (per unit) */
+
   fsm lcp_fsm;          /* LCP fsm structure */
   lcp_options lcp_wantoptions;    /* Options that we want to request */
   lcp_options lcp_gotoptions;     /* Options that peer ack'd */