diff -ru /cvs/netinet6.old/nd6.c /usr/src/sys/netinet6/nd6.c
--- /cvs/netinet6.old/nd6.c	Fri Mar  9 02:41:46 2001
+++ /usr/src/sys/netinet6/nd6.c	Fri Mar  9 02:45:31 2001
@@ -970,6 +970,7 @@
 			return(1);
 			break;
 		default:
+			m_freem(m);
 			return(0);
 		}
 	}
@@ -1026,6 +1027,7 @@
 				ln, 0);
 		}
 	}
+	/* do not free mbuf here, it is queued into llinfo_nd6 */
 	return(0);
 }
 #endif /* OLDIP6OUTPUT */
@@ -1981,6 +1983,7 @@
 			*desten = 0;
 			return(1);
 		default:
+			m_freem(m);
 			return(0);
 		}
 	}
@@ -1988,12 +1991,14 @@
 	if (rt == NULL ||
 	    rt->rt_gateway->sa_family != AF_LINK) {
 		printf("nd6_storelladdr: something odd happens\n");
+		m_freem(m);
 		return(0);
 	}
 	sdl = SDL(rt->rt_gateway);
 	if (sdl->sdl_alen == 0) {
 		/* this should be impossible, but we bark here for debugging */
 		printf("nd6_storelladdr: sdl_alen == 0\n");
+		m_freem(m);
 		return(0);
 	}