Make libvirt-style access control work when only doing RA.

router-advertisement configured, but DHCPv6 not
configured.

CHANGELOG

@@ -12,6 +12,10 @@ version 2.62
 	    which are not divisible by 8. Thanks to Andre Coetzee 
 	    for spotting this.
 
+	    Fix non-response to router-solicitations when
+	    router-advertisement configured, but DHCPv6 not
+	    configured. Thanks to Marien Zwart for the patch.
+
 
 version 2.61
 	    Re-write interface discovery code on *BSD to use

src/dhcp-common.c

@@ -407,7 +407,7 @@ static int join_multicast_worker(struct in6_addr *local, int prefix,
       return 1;
 
   /* weird libvirt-inspired access control */
-  for (context = daemon->dhcp6; context; context = context->next)
+  for (context = daemon->ra_contexts; context; context = context->next)
     if (!context->interface || strcmp(context->interface, ifrn_name) == 0)
       break;
 

src/dnsmasq.c

@@ -849,14 +849,11 @@ int main (int argc, char **argv)
 	}
 
 #ifdef HAVE_DHCP6
-      if (daemon->dhcp6)
-	{
-	  if (FD_ISSET(daemon->dhcp6fd, &rset))
-	    dhcp6_packet(now);
+      if (daemon->dhcp6 && FD_ISSET(daemon->dhcp6fd, &rset))
+	dhcp6_packet(now);
 
-	  if (daemon->ra_contexts && FD_ISSET(daemon->icmp6fd, &rset))
-	    icmp6_packet();
-	}
+      if (daemon->ra_contexts && FD_ISSET(daemon->icmp6fd, &rset))
+	icmp6_packet();
 #endif
 
 #  ifdef HAVE_SCRIPT

src/radv.c

@@ -158,7 +158,7 @@ void icmp6_packet(void)
       return;
  
   /* weird libvirt-inspired access control */
-  for (context = daemon->dhcp6; context; context = context->next)
+  for (context = daemon->ra_contexts; context; context = context->next)
     if (!context->interface || strcmp(context->interface, interface) == 0)
       break;