diff -X exclude_files -Nabur ospfd2.6/linux/ospfd_linux.C ospfd2.7/linux/ospfd_linux.C
--- ospfd2.6/linux/ospfd_linux.C	Wed Sep 26 15:54:03 2001
+++ ospfd2.7/linux/ospfd_linux.C	Mon Oct 22 13:51:59 2001
@@ -411,7 +411,6 @@
     rlimit rlim;
 
     next_phyint = 0;
-    memset(phys, 0, sizeof(phys));
     (void) gettimeofday(&last_time, NULL);
     changing_routerid = false;
     change_complete = false;
@@ -589,12 +588,11 @@
 int LinuxOspfd::get_phyint(InAddr addr)
 
 {
-    int i;
-    for (i=0; i < MAXIFs; i++) {
+    AVLsearch iter(&phyints);
 	BSDPhyInt *phyp;
-	phyp = phys[i];
-	if (phyp && (phyp->addr & phyp->mask) == (addr & phyp->mask))
-	    return(i);
+    while ((phyp = (BSDPhyInt *)iter.next())) {
+	if ((phyp->addr & phyp->mask) == (addr & phyp->mask))
+	    return(phyp->phyint());
     }
 
     return(-1);
@@ -638,7 +636,6 @@
     end = (ifreq *)(ifcbuf + cfgreq.ifc_len);
     for (; ifrp < end; ifrp = (ifreq *)(((byte *)ifrp) + size)) {
 	BSDPhyInt *phyp;
-	byte *phystr;
 	ifreq ifr;
 	sockaddr_in *insock;
 	InAddr addr;
@@ -646,11 +643,7 @@
 	size = sizeof(InAddr) + sizeof(ifrp->ifr_name);
 	if (size < sizeof(ifreq))
 	    size = sizeof(ifreq);
-	// IP interfaces only
-	if (ifrp->ifr_addr.sa_family != AF_INET)
-	    continue;
 	// Ignore loopback interfaces
-	// Also ignore "down" interfaces
 	// Get interface flags
 	short ifflags;
 	memcpy(ifr.ifr_name, ifrp->ifr_name, sizeof(ifr.ifr_name));
@@ -670,32 +663,25 @@
 	    exit(1);
 	}
 	ifindex = ifr.ifr_ifindex;
+#else
+	ifindex = ++next_phyint;
 #endif
 	/* Found a legitimate interface
 	 * Add physical interface and
 	 * IP address maps
 	 */
-	if (!(phyp = (BSDPhyInt *) phyints.find((byte *)ifrp->ifr_name,
-						sizeof(ifrp->ifr_name)))){
-	    phyp = new BSDPhyInt;
-	    phystr = new byte[sizeof(ifrp->ifr_name)];
-	    memcpy(phystr, ifrp->ifr_name, sizeof(ifrp->ifr_name));
-	    phyp->key = phystr;
-	    phyp->keylen = sizeof(ifrp->ifr_name);
-#if LINUX_VERSION_CODE < LINUX22
-	    phyp->phyint = ++next_phyint;
-#else
-	    phyp->phyint = ifindex;
-#endif
+	if (!(phyp = (BSDPhyInt *) phyints.find(ifindex, 0))) {
+	    phyp = new BSDPhyInt(ifindex);
+	    phyp->phyname = new char[strlen(ifrp->ifr_name)];
+	    strcpy(phyp->phyname, ifrp->ifr_name);
 	    phyp->flags = 0;
 	    phyints.add(phyp);
-	    // May have multiple interfaces attached to same physical
-	    // net
-	    if (!phys[phyp->phyint])
-	        phys[phyp->phyint] = phyp;
 	}
 	if (!memchr(ifrp->ifr_name, ':', sizeof(ifrp->ifr_name)))
 	    set_flags(phyp, ifflags);
+	// store address information; IP interfaces only
+	if (ifrp->ifr_addr.sa_family != AF_INET)
+	    continue;
 	insock = (sockaddr_in *) &ifrp->ifr_addr;
 	addr = phyp->addr = ntoh32(insock->sin_addr.s_addr);
 	// Get subnet mask
@@ -761,9 +747,9 @@
     phyp->flags = flags;
     if (((old_flags^flags) & IFF_UP) != 0 && ospf) {
         if ((flags & IFF_UP) != 0)
-	    ospf->phy_up(phyp->phyint);
+	    ospf->phy_up(phyp->phyint());
 	else
-	    ospf->phy_down(phyp->phyint);
+	    ospf->phy_down(phyp->phyint());
     }
 }
 
@@ -803,49 +789,17 @@
 	    phyp = map->phyp;
     }
     else {
-	byte ifname[IFNAMSIZ];
-	memset(ifname, 0, IFNAMSIZ);
-	strncpy((char *)ifname, arg, IFNAMSIZ);
-	phyp = (BSDPhyInt *) phyints.find(ifname, IFNAMSIZ);
-#if LINUX_VERSION_CODE >= LINUX22
-	// Try to detect unnumbered interfaces
-	if (!phyp) {
-	    int ifindex;
-	    byte *phystr;
-	    ifreq ifr;
-	    short ifflags;
-	    memcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
-	    if (memchr(ifr.ifr_name, ':', sizeof(ifr.ifr_name)))
-	        goto done;
-	    if (ioctl(udpfd, SIOCGIFFLAGS, (char *)&ifr) < 0)
-	        goto done;
-	    if ((ifr.ifr_flags & IFF_LOOPBACK) != 0)
-	        goto done;
-	    ifflags = ifr.ifr_flags;
-	    // Get interface index
-	    if (ioctl(udpfd, SIOCGIFINDEX, (char *)&ifr) < 0)
-	        goto done;
-	    ifindex = ifr.ifr_ifindex;
-	    if (phys[ifindex])
-	        goto done;
-	    phyp = new BSDPhyInt;
-	    phystr = new byte[sizeof(ifr.ifr_name)];
-	    memcpy(phystr, ifr.ifr_name, sizeof(ifr.ifr_name));
-	    phyp->key = phystr;
-	    phyp->keylen = sizeof(ifr.ifr_name);
-	    phyp->phyint = ifindex;
-	    phyp->flags = 0;
-	    phyints.add(phyp);
-	    phys[phyp->phyint] = phyp;
-	    set_flags(phyp, ifflags);
-	    phyp->addr = 0;
-	    phyp->mask = 0;
-	    phyp->dstaddr = 0;
+        AVLsearch iter(&phyints);
+	while ((phyp = (BSDPhyInt *)iter.next())) {
+	    if (strcmp(arg, phyp->phyname))
+	        continue;
+	    // Found interface by name
+	    addr.s_addr = hton32(phyp->addr);
+	    break;
 	}
-#endif
     }
 
-  done:
+
     if (!phyp) {
 	syslog(LOG_ERR, "Bad interface identifier %s", arg);
 	return(false);
@@ -963,7 +917,7 @@
 	return(TCL_OK);
 
     m.address = phyp->addr;
-    m.phyint = phyp->phyint;
+    m.phyint = phyp->phyint();
     m.mask = phyp->mask;
     intval = atoi(argv[2]);
     m.mtu = (intval ? intval : phyp->mtu);
@@ -1059,7 +1013,7 @@
 
     gettimeofday(&now, 0);
     m.address = phyp->addr;
-    m.phyint = phyp->phyint;
+    m.phyint = phyp->phyint();
     m.key_id = atoi(argv[2]);
     memset(m.auth_key, 0, 16);
     strncpy((char *) m.auth_key, argv[3], (size_t) 16);
diff -X exclude_files -Nabur ospfd2.6/linux/ospfd_linux.h ospfd2.7/linux/ospfd_linux.h
--- ospfd2.6/linux/ospfd_linux.h	Wed Sep 26 15:54:03 2001
+++ ospfd2.7/linux/ospfd_linux.h	Mon Oct 22 13:51:59 2001
@@ -29,10 +29,9 @@
     int rtsock; // rtnetlink file descriptor
     timeval last_time; // Last return from gettimeofday
     int next_phyint; // Next phyint value
-    PatTree phyints; // Physical interfaces
+    AVLtree phyints; // Physical interfaces
     AVLtree interface_map; // IP addresses to phyint
     AVLtree directs; // Directly attached prefixes
-    class BSDPhyInt *phys[MAXIFs];
     rtentry m;
     uns32 nlm_seq;
     FILE *logstr;
@@ -81,21 +80,35 @@
 };
 
 /* Representation of a physical interface.
- * Used to map strings into small integers.
+ * Indexed by IfIndex (phyint).
  */
 
-class BSDPhyInt : public PatEntry {
-    int phyint;
+class BSDPhyInt : public AVLitem {
+    char *phyname;
     InAddr addr;
     short flags;
     InMask mask;
     InAddr dstaddr;	// Other end of p-p link
     int mtu;
 
+    inline BSDPhyInt(int index);
     friend class LinuxOspfd;
     friend int SendInterface(void *,struct Tcl_Interp *, int,char *[]);
     friend int SendMD5Key(void *, Tcl_Interp *, int, char *argv[]);
+    inline int phyint();
 };
+
+inline BSDPhyInt::BSDPhyInt(int index) : AVLitem(index, 0)
+{
+    addr = 0;
+    mask = 0;
+    dstaddr = 0;
+}
+
+inline int BSDPhyInt::phyint()
+{
+    return(index1());
+}
 
 /* Map an IP interface (either belonging to an interface, or
  * the other end of a point-to-point interface) to a
diff -X exclude_files -Nabur ospfd2.6/linux/system.C ospfd2.7/linux/system.C
--- ospfd2.6/linux/system.C	Wed Sep 26 15:54:03 2001
+++ ospfd2.7/linux/system.C	Mon Oct 22 13:52:00 2001
@@ -67,7 +67,7 @@
     size_t len;
     sockaddr_in to;
 
-    phyp = phys[phyint];
+    phyp = (BSDPhyInt *)phyints.find(phyint, 0);
 #if LINUX_VERSION_CODE < LINUX22
     if (phyp->flags & IFF_POINTOPOINT)
 	pkt->i_dest = hton32(phyp->dstaddr);
@@ -154,7 +154,7 @@
 
     if (phyint == -1)
         return(false);
-    if (!(phyp = phys[phyint]))
+    if (!(phyp = (BSDPhyInt *)phyints.find(phyint, 0)))
         return(false);
     return((phyp->flags & IFF_UP) != 0);
 }
@@ -192,7 +192,7 @@
 #endif
     BSDPhyInt *phyp;
 
-    phyp = phys[phyint];
+    phyp = (BSDPhyInt *)phyints.find(phyint, 0);
     if ((phyp->flags & IFF_MULTICAST) == 0)
 	return;
     mreq.imr_multiaddr.s_addr = hton32(group);
@@ -222,7 +222,7 @@
 #endif
     BSDPhyInt *phyp;
 
-    phyp = phys[phyint];
+    phyp = (BSDPhyInt *)phyints.find(phyint, 0);
     if ((phyp->flags & IFF_MULTICAST) == 0)
 	return;
     mreq.imr_multiaddr.s_addr = hton32(group);
@@ -301,7 +301,7 @@
     BSDPhyInt *phyp;
     int optname;
 
-    phyp = phys[phyint];
+    phyp = (BSDPhyInt *)phyints.find(phyint, 0);
     if (igmpfd == -1)
         return;
     if ((phyp->flags & IFF_MULTICAST) == 0)
@@ -346,7 +346,7 @@
 	BSDPhyInt *phyp=0;
 	gw = mpp->NHs[0].gw;
 	if (mpp->NHs[0].phyint != -1)
-	    phyp = phys[mpp->NHs[0].phyint];
+	    phyp = (BSDPhyInt *)phyints.find(mpp->NHs[0].phyint, 0);
 	if (phyp && (phyp->flags & IFF_POINTOPOINT) != 0)
 	    gw = phyp->dstaddr;
 	isp = (sockaddr_in *) &m.rt_gateway;
@@ -495,7 +495,7 @@
 	int phyint;
 	gw = hton32(mpp->NHs[0].gw);
 	if ((phyint = mpp->NHs[0].phyint) != -1)
-	    phyp = phys[phyint];
+	    phyp = (BSDPhyInt *)phyints.find(phyint, 0);
 	if (phyp && (phyp->flags & IFF_POINTOPOINT) != 0){
 	    // Fill in gw attribute
 	    rta_gw->rta_len = RTA_SPACE(sizeof(phyint));
@@ -635,8 +635,8 @@
 {
     BSDPhyInt *phyp;
 
-    phyp = phys[phyint];
-    return((char *) phyp->key);
+    phyp = (BSDPhyInt *)phyints.find(phyint, 0);
+    return(phyp ? (char *) phyp->phyname : 0);
 }
 
 /* Print an OSPF logging message into the
diff -X exclude_files -Nabur ospfd2.6/src/dbage.C ospfd2.7/src/dbage.C
--- ospfd2.6/src/dbage.C	Wed Sep 26 15:54:02 2001
+++ ospfd2.7/src/dbage.C	Mon Oct 22 13:51:58 2001
@@ -181,7 +181,7 @@
     refresh_lsas();
     maxage_lsas();
     refresh_donotages();
-    do_random_refreshes();
+    do_refreshes();
 
     // Finish any flooding that was caused by age routines
     send_updates();
@@ -198,6 +198,11 @@
 
 /* Go through the LSAs of age MinLSInterval, reoriginating
  * those that have been deferred.
+ * We firest put them on a list, so that the act of reoriginating
+ * doesn't corrupt the singly linked list within t he age bins (in
+ * some cases, reoriginating one LSA causes others to be reoriginated,
+ * so it is not enough to simply remember the next LSA in the
+ * age bin).
  */
 
 void OSPF::deferred_lsas()
@@ -205,19 +210,27 @@
 {
     uns16 bin;
     LSA	*lsap;
-    LSA	*next_lsa;
+    LsaList defer_list;
 
     bin = Age2Bin(MinLSInterval);
 
-    for (lsap = LSA::AgeBins[bin]; lsap; lsap = next_lsa) {
-	next_lsa = lsap->lsa_agefwd;
+    for (lsap = LSA::AgeBins[bin]; lsap; lsap = lsap->lsa_agefwd) {
 	if (!lsap->deferring)
 	    continue;
 	if (lsap->adv_rtr() == myid) {
 	    lsap->deferring = false;
-	    lsap->reoriginate(false);
+	    defer_list.addEntry(lsap);
 	}
     }
+
+    LsaListIterator *iter;
+    iter = new LsaListIterator(&defer_list);
+    while((lsap = iter->get_next())) {
+        if (lsap->valid() && lsap->lsa_agebin == bin)
+	    lsap->reoriginate(false);
+	iter->remove_current();
+    }
+    delete iter;
 }
 
 /* Verify LSA checksums every 15 minutes, on the average.
@@ -488,34 +501,27 @@
 {
     int slot;
 
-    if (!random_refresh) {
-	int msgno;
-	msgno = lsap->do_not_age() ? LOG_DNAREFR : LOG_LSAREFR;
-	if (spflog(msgno, 1))
-	    log(lsap);
-        lsap->reoriginate(true);
-    }
-
-    /* We are going to randomly delay reorigination
+    /* If random_refresh, 
+     * we are going to randomly delay reorigination
      * until some time in the next MaxAgeDiff
      * seconds. Note: we don't care where the current
      * refresh bin is.
      */
     slot = Timer::random_period(MaxAgeDiff);
-    if (slot < 0 || slot >= MaxAgeDiff)
+    if (!random_refresh || slot < 0 || slot >= MaxAgeDiff)
         slot = LSA::RefreshBin0;
     LSA::RefreshBins[slot]++;
     pending_refresh.addEntry(lsap);
 }
 
-/* Go through the list of delayed originations, and refresh
+/* Go through the list of scheduled originations, and refresh
  * the number that have been scheduled for this 
  * timeslot (width one second). LSAs that have already
  * been overwritten or deleted still count against the tally,
  * but are of course not refreshed.
  */
 
-void OSPF::do_random_refreshes()
+void OSPF::do_refreshes()
 
 {
     int count;
diff -X exclude_files -Nabur ospfd2.6/src/monitor.C ospfd2.7/src/monitor.C
--- ospfd2.6/src/monitor.C	Wed Sep 26 15:54:02 2001
+++ ospfd2.7/src/monitor.C	Mon Oct 22 13:51:58 2001
@@ -557,7 +557,7 @@
 	rtersp->net = hton32(rte->net());
 	rtersp->mask = hton32(rte->mask());
 	strncpy(rtersp->type, rtt_ascii[rte->type()], MON_RTYPELEN);
-	if (rte->t2cost == Infinity) {
+	if (rte->intra_AS() || rte->t2cost == Infinity) {
 	    rtersp->cost = hton32(rte->cost);
 	    rtersp->o_cost = 0;
 	}
diff -X exclude_files -Nabur ospfd2.6/src/ospf.h ospfd2.7/src/ospf.h
--- ospfd2.6/src/ospf.h	Wed Sep 26 15:54:02 2001
+++ ospfd2.7/src/ospf.h	Mon Oct 22 13:51:58 2001
@@ -245,7 +245,7 @@
     void free_maxage_lsas();
     void donotage_changes();
     void schedule_refresh(LSA *);
-    void do_random_refreshes();
+    void do_refreshes();
 
     // LSA origination
     int	self_originated(SpfNbr *, LShdr *hdr, LSA *database_copy);
@@ -329,7 +329,7 @@
     // Version numbers
     enum {
 	vmajor = 2,	// Major version number
-	vminor = 6,	// Minor version number
+	vminor = 7,	// Minor version number
     };
 
     // Entry points into the OSPF code

.