llmnrd: Don't enumerate and store IPv6 addresses if IPv6 is disabled

Currently IPv6 addresses are always enumerated via RTNL socket and then
stored internally, even if llmnrd was started without the IPv6 command
line option '-6'. Even though no queries on AF_INET6 sockets will be
answered, this behavior might be confusing. Especially due to messages
like:

  Added IPv6 address fe80::f0eb:aaff:feb3:ae58 on interface tap0

being logged.

Explicitely disable IPv6 address enumeration on the RTNL socket to fix
this behavior.

Closes #8

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

1 files changed, 2 insertions, 2 deletions

diff --git a/socket.h b/socket.h
index bb555c8..93c41a0 100644
--- a/socket.h
+++ b/socket.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2014-2015 Tobias Klauser <tklauser@distanz.ch>
+ * Copyright (C) 2014-2016 Tobias Klauser <tklauser@distanz.ch>
  *
  * This file is part of llmnrd.
  *
@@ -24,7 +24,7 @@
 
 int socket_open_ipv4(uint16_t port);
 int socket_open_ipv6(uint16_t port);
-int socket_open_rtnl(void);
+int socket_open_rtnl(bool ipv6);
 
 int socket_mcast_group_ipv4(int sock, unsigned int ifindex, bool join);
 int socket_mcast_group_ipv6(int sock, unsigned int ifindex, bool join);