OpenBSD: rename IFF_NOTRAILERS to IFF_STATICARP

CHANGELOG.md

@@ -47,6 +47,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
   ([#833](https://github.com/nix-rust/nix/pull/833))
 - Enabled more `ptrace::Request` definitions for uncommon Linux platforms
   ([#892](https://github.com/nix-rust/nix/pull/892))
+- On OpenBSD, `IFF_NOTRAILERS` has been renamed to `IFF_STATICARP`, this breaks OpenBSD < 6.3.
 
 ### Fixed
 - Properly exposed 460800 and 921600 baud rates on NetBSD

src/net/if_.rs

@@ -44,7 +44,6 @@ libc_bitflags!(
                   target_os = "linux",
                   target_os = "macos",
                   target_os = "netbsd",
-                  target_os = "openbsd",
                   target_os = "solaris"))]
         IFF_NOTRAILERS;
         /// Interface manages own routes.
@@ -186,7 +185,7 @@ libc_bitflags!(
         #[cfg(any(target_os = "solaris"))]
         IFF_DEPRECATED;
         /// Static ARP.
-        #[cfg(any(target_os = "dragonfly", target_os = "freebsd"))]
+        #[cfg(any(target_os = "dragonfly", target_os = "openbsd", target_os = "freebsd"))]
         IFF_STATICARP;
         /// Address from stateless addrconf.
         #[cfg(any(target_os = "solaris"))]