Fixes one recently introduced IPv6 BGP compatibility problem.

	       * in the same interface, we should also send a link local 

	       * next hop address. We use the received one (stored in the 

	       * other part of BA_NEXT_HOP eattr). If we didn't received

	       * it (for example it is a static route), we do not send link

	       * local next hop address. It is contrary to RFC 2545, but

	       * probably the only sane possibility.

	       * it (for example it is a static route), we can't use

	       * 'third party' next hop and we have to use local IP address

	       * as next hop. Sending original next hop address without

	       * link local address seems to be a natural way to solve that

	       * problem, but it is contrary to RFC 2545 and Quagga does not

	       * accept such routes.

	       */

	      n = neigh_find(&p->p, &ip, 0);

	      if (n && n->iface == p->neigh->iface)

		{

		  if (ipa_nonzero(ipp[1]))

		    ip_ll = ipp[1];

		  else

		    {

		      ip = p->source_addr;

		      ip_ll = p->local_link;

		    }

		}

	    }

	  if (ipa_nonzero(ip_ll))