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Diffstat (limited to 'lib/sockopt.h')
-rw-r--r--lib/sockopt.h10
1 files changed, 4 insertions, 6 deletions
diff --git a/lib/sockopt.h b/lib/sockopt.h
index cb05c6fb..69309e00 100644
--- a/lib/sockopt.h
+++ b/lib/sockopt.h
@@ -82,13 +82,11 @@ extern int setsockopt_ipv6_multicast_loop (int, int);
(((af) == AF_INET) : SOPT_SIZE_CMSG_IFINDEX_IPV4() \
? SOPT_SIZE_CMSG_PKTINFO_IPV6())
-extern int setsockopt_multicast_ipv4(int sock, int optname,
- struct in_addr if_addr
- /* required: interface to join on */,
+extern int setsockopt_ipv4_multicast_if(int sock,
+ unsigned int ifindex);
+extern int setsockopt_ipv4_multicast(int sock, int optname,
unsigned int mcast_addr,
- unsigned int ifindex
- /* optional: if non-zero, may be used
- instead of if_addr */);
+ unsigned int ifindex);
extern int setsockopt_ipv4_tos(int sock, int tos);
/* Ask for, and get, ifindex, by whatever method is supported. */