--- dibbler-1.0.1.orig/Port-linux/lowlevel-linux.c
+++ dibbler-1.0.1/Port-linux/lowlevel-linux.c
@@ -492,6 +492,9 @@ int sock_add(char * ifacename,int ifacei
 	sprintf(Message, "socket creation failed. Is IPv6 protocol supported by kernel?");
 	return LOWLEVEL_ERROR_UNSPEC;
     }	
+
+        int val=6;
+        setsockopt(Insock, SOL_SOCKET, SO_PRIORITY, &val, sizeof(val));
 	
     /* Set the options  to receivce ipv6 traffic */
     if (setsockopt(Insock, IPPROTO_IPV6, IPV6_RECVPKTINFO, &on, sizeof(on)) < 0) {
--- dibbler-1.0.1.orig/Port-linux/libnetlink.c
+++ dibbler-1.0.1/Port-linux/libnetlink.c
@@ -45,6 +45,9 @@ int rtnl_open_byproto(struct rtnl_handle
 		return -1;
 	}
 
+	int val=6;
+	setsockopt(rth->fd, SOL_SOCKET, SO_PRIORITY, &val, sizeof(val));
+
 	if (setsockopt(rth->fd,SOL_SOCKET,SO_SNDBUF,&sndbuf,sizeof(sndbuf)) < 0) {
 		perror("SO_SNDBUF");
 		return -1;
--- dibbler-1.0.1.orig/Port-linux/lowlevel-linux-link-state.c
+++ dibbler-1.0.1/Port-linux/lowlevel-linux-link-state.c
@@ -218,6 +218,9 @@ int report_link_state(const char* iface)
 	return -1;
     }
 
+        int val=6;
+        setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &val, sizeof(val));
+
     /* here just to make it more convenient for testing:if we define DEBUG,so a plugin-out and plugin-in event
      * will be detected if we do "ifconfig interface-name down" and ifconfig interface-name up".Otherwise,
      * if we do not define DEBUG, a plugin-in and plugin-out event can only be detected when the local link