--- /home/korovkin/projects/eCos/trunk/packages/net/bsd_tcpip/current/src/sys/net/route.c	2003-07-24 22:04:25.000000000 +0400
+++ route.c	2007-02-21 16:30:01.000000000 +0300
@@ -137,6 +137,36 @@
     }
 }
 
+externC void if_indextoname(int indx, char *buf, int len);

+

+static int

+rt_reinit_rtdelete_if( struct radix_node *rn, void *vifp )

+{

+    struct rtentry *rt = (struct rtentry *)rn; //routing table

+    const char* ifname = (const char*)vifp; //interface name

+    char addr[64];

+    if (rt->rt_ifa->ifa_addr->sa_family == AF_INET) {

+        if (rt->rt_ifp)

+            if_indextoname(rt->rt_ifp->if_index, addr, sizeof(addr));

+        if (!rt->rt_ifp || !strcmp(addr, ifname))

+            rtrequest(RTM_DELETE, rt_key(rt), rt->rt_gateway, rt_mask(rt),

+                  0, NULL);

+    }

+    return (0);

+}

+

+void

+cyg_route_reinit_if(char* ifname)

+{

+    int i;

+    for (i = 0;  i < AF_MAX+1;  i++) {

+        struct radix_node_head *rnh;

+        rnh = rt_tables[i];

+        if (rnh)

+            (*rnh->rnh_walktree)(rnh, rt_reinit_rtdelete_if, ifname);

+    }

+}

+

 /*
  * Packet routing routines.
  */
--- /home/korovkin/projects/eCos/trunk/packages/net/common/current/include/network.h	2005-11-04 15:16:58.000000000 +0300
+++ network.h	2007-02-21 16:35:47.000000000 +0300
@@ -71,6 +71,7 @@
 __externC void init_all_network_interfaces(void);
 
 __externC void     cyg_route_reinit(void);
+__externC void     cyg_route_reinit_if(const char* ifname);
 __externC void     perror(const char *) __THROW;
 __externC int      close(int);
 __externC ssize_t  read(int, void *, size_t);
Index: dhcp_prot.c
===================================================================
RCS file: /cvs/ecos/ecos-opt/net/net/common/current/src/dhcp_prot.c,v
retrieving revision 1.20
diff -u -u -r1.20 dhcp_prot.c
--- dhcp_prot.c	5 Mar 2006 12:48:37 -0000	1.20
+++ dhcp_prot.c	21 Feb 2007 13:40:21 -0000
@@ -361,7 +361,7 @@
     int retcode = false;
 
     // Ensure clean slate
-    cyg_route_reinit();  // Force any existing routes to be forgotten
+    cyg_route_reinit_if(intf);  // Force any existing routes to be forgotten
 
     s = socket(AF_INET, SOCK_DGRAM, 0);
     if (s < 0) {
@@ -1388,7 +1388,7 @@
     int retcode = false;
 
     // Ensure clean slate
-    cyg_route_reinit();  // Force any existing routes to be forgotten
+    cyg_route_reinit_if(intf);  // Force any existing routes to be forgotten
 
     s = socket(AF_INET, SOCK_DGRAM, 0);
     if (s < 0) {