Don't reset packet length on transmission, in case of retransmission.

src/radv.c

@@ -528,7 +528,7 @@ static void send_ra_alias(time_t now, int iface, char *iface_name, struct in6_ad
     }
   
   while (retry_send(sendto(daemon->icmp6fd, daemon->outpacket.iov_base, 
-			   save_counter(0), 0, (struct sockaddr *)&addr, 
+			   save_counter(-1), 0, (struct sockaddr *)&addr, 
 			   sizeof(addr))));
   
 }

src/rfc3315.c

@@ -2127,7 +2127,7 @@ void relay_upstream6(struct dhcp_relay *relay, ssize_t sz,
 		my_syslog(MS_DHCP | LOG_ERR, _("Cannot multicast to DHCPv6 server without correct interface"));
 	    }
 		
-	  send_from(daemon->dhcp6fd, 0, daemon->outpacket.iov_base, save_counter(0), &to, &from, 0);
+	  send_from(daemon->dhcp6fd, 0, daemon->outpacket.iov_base, save_counter(-1), &to, &from, 0);
 	  
 	  if (option_bool(OPT_LOG_OPTS))
 	    {

src/slaac.c

@@ -164,7 +164,7 @@ time_t periodic_slaac(time_t now, struct dhcp_lease *leases)
 	    addr.sin6_port = htons(IPPROTO_ICMPV6);
 	    addr.sin6_addr = slaac->addr;
 	    
-	    if (sendto(daemon->icmp6fd, daemon->outpacket.iov_base, save_counter(0), 0,
+	    if (sendto(daemon->icmp6fd, daemon->outpacket.iov_base, save_counter(-1), 0,
 		       (struct sockaddr *)&addr,  sizeof(addr)) == -1 &&
 		errno == EHOSTUNREACH)
 	      slaac->ping_time = 0; /* Give up */