diff options
Diffstat (limited to 'lib/sockopt.c')
| -rw-r--r-- | lib/sockopt.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/sockopt.c b/lib/sockopt.c index 6ddbded1..f5f1a7ed 100644 --- a/lib/sockopt.c +++ b/lib/sockopt.c @@ -176,9 +176,10 @@ getsockopt_ipv6_ifindex (struct msghdr *msgh) int setsockopt_multicast_ipv4(int sock, int optname, - struct in_addr if_addr, + struct in_addr if_addr /* required */, unsigned int mcast_addr, - unsigned int ifindex) + unsigned int ifindex /* optional: if non-zero, may be + used instead of if_addr */) { #ifdef HAVE_STRUCT_IP_MREQN_IMR_IFINDEX |