OpenBSD does not support IPv4 source specific multicast (SSM).

Author: Niklas Hallqvist

src/socket.rs

@@ -1218,6 +1218,7 @@ impl Socket {
         target_os = "dragonfly",
         target_os = "haiku",
         target_os = "netbsd",
+        target_os = "openbsd",
         target_os = "redox",
         target_os = "fuchsia",
     )))]
@@ -1251,6 +1252,7 @@ impl Socket {
         target_os = "dragonfly",
         target_os = "haiku",
         target_os = "netbsd",
+        target_os = "openbsd",
         target_os = "redox",
         target_os = "fuchsia",
     )))]

src/sys/unix.rs

@@ -106,6 +106,7 @@ pub(crate) use libc::{
     target_os = "dragonfly",
     target_os = "haiku",
     target_os = "netbsd",
+    target_os = "openbsd",
     target_os = "redox",
     target_os = "fuchsia",
 )))]

tests/socket.rs

@@ -1220,6 +1220,7 @@ test!(
     target_os = "haiku",
     target_os = "illumos",
     target_os = "netbsd",
+    target_os = "openbsd",
     target_os = "redox",
     target_os = "solaris",
 )))]
@@ -1248,6 +1249,7 @@ fn join_leave_multicast_v4_n() {
     target_os = "dragonfly",
     target_os = "haiku",
     target_os = "netbsd",
+    target_os = "openbsd",
     target_os = "redox",
     target_os = "fuchsia",
 )))]