Various changes (referencing issue #6);

- Fix a bug where re-reading routes would close the interfaces

- Allow unicast solicitation messages (experimental)

src/iface.cc

@@ -564,7 +564,7 @@ int iface::poll_all()
                 continue;
             }
 
-            if (!saddr.is_unicast() || !daddr.is_multicast()) {
+            if (!saddr.is_unicast()/* || !daddr.is_multicast()*/) {
                 continue;
             }
 

src/proxy.cc

@@ -98,6 +98,10 @@ void proxy::handle_solicit(const address& saddr, const address& daddr,
 
         logger::debug() << "checking " << ru->addr() << " against " << taddr;
 
+        if (!daddr.is_multicast() && ru->addr() != daddr) {
+            continue;
+        }
+
         if (ru->addr() == taddr) {
             if (!se) {
                 se = session::create(_ptr, saddr, daddr, taddr);

src/route.cc

@@ -81,6 +81,8 @@ std::string route::token(const char* str)
 
 void route::load(const std::string& path)
 {
+    // Hack to make sure the interfaces are not freed prematurely.
+    std::list<ptr<route> > tmp_routes(_routes);
     _routes.clear();
 
     logger::debug() << "reading routes";