resolver: Use proper IPv6 source address when sending DNS queries

This fix is for following scenario:
 - New interface is coming up.
 - There is radvd in the connected network and it is
   advertising IPv6 addresses and DNS servers.
 - Kernel receives router advertisement and picks up the DNS
   server information which is then routed via netlink to
   rtnl.c:rtnl_newnduseropt() which then creates DNS listener.
 - Kernel activates DAD (duplicate address detection).
 - As the DAD takes some time we now have interface up
   and it only has link local IPv6 address defined.
 - The DNS listener is now using link local source addresses when
   sending queries instead of proper autoconfigured addresses.
 - When DAD is finished, the interface will have autoconfigured
   addresses assigned and corresponding netlink message will cause
   function rtnl.c:process_newaddr() to be called.
 - If all this happens, then we re-create DNS listener
   in dnsproxy.c so that listener will have a proper
   (autoconfigured) source address when sending DNS packets.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/connman.h b/src/connman.h
index 97e5437f..be3a2c12 100644
--- a/src/connman.h
+++ b/src/connman.h
@@ -196,6 +196,7 @@ int __connman_resolver_init(connman_bool_t dnsproxy);
 void __connman_resolver_cleanup(void);
 int __connman_resolvfile_append(const char *interface, const char *domain, const char *server);
 int __connman_resolvfile_remove(const char *interface, const char *domain, const char *server);
+int __connman_resolver_redo_servers(const char *interface);
 
 void __connman_storage_migrate(void);
 GKeyFile *__connman_storage_open_global();