I don't think that the net_route function has ever worked correctly. The...

I don't think that the net_route function has ever worked correctly.  The source ip was updated in the match struct instead of the route ip.  From Brennan Ashton.

drivers/lcd/st7567.c

@@ -206,7 +206,7 @@
 #define LS_BIT          (1 << 0)
 #define MS_BIT          (1 << 7)
 
-/* Debst7567 ******************************************************************************/
+/* Debug ******************************************************************************/
 
 #ifdef CONFIG_LCD_ST7567DEBUG
 # define st7567dbg(format, ...)  vdbg(format, ##__VA_ARGS__)

net/route/net_router.c

@@ -146,9 +146,9 @@ int net_router(net_ipaddr_t target, FAR net_ipaddr_t *router)
       /* We found a route.  Return the router address. */
 
 #ifdef CONFIG_NET_IPv6
-      net_ipaddr_copy(router, match.target);
+      net_ipaddr_copy(router, match.router);
 #else
-      net_ipaddr_copy(*router, match.target);
+      net_ipaddr_copy(*router, match.router);
 #endif
       ret = OK;
     }