llmnrd: Allow to bind to a specific network interface

Add a command line option -i/--interface which allows to bind the llmnrd
sockets to a specific interface. If used, requests are only answered on
the specified interface.

Example: llmnrd -i eth0

Closes #9
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

1 files changed, 2 insertions, 2 deletions

diff --git a/socket.h b/socket.h
index 93c41a0..49d999b 100644
--- a/socket.h
+++ b/socket.h
@@ -22,8 +22,8 @@
 #include <stdbool.h>
 #include <stdint.h>
 
-int socket_open_ipv4(uint16_t port);
-int socket_open_ipv6(uint16_t port);
+int socket_open_ipv4(uint16_t port, const char *iface);
+int socket_open_ipv6(uint16_t port, const char *iface);
 int socket_open_rtnl(bool ipv6);
 
 int socket_mcast_group_ipv4(int sock, unsigned int ifindex, bool join);