diff --git a/vendor/golang.org/x/sys/unix/sockcmsg_unix.go b/vendor/golang.org/x/sys/unix/sockcmsg_unix.go
index 5f9ae23..062bcab 100644
--- a/vendor/golang.org/x/sys/unix/sockcmsg_unix.go
+++ b/vendor/golang.org/x/sys/unix/sockcmsg_unix.go
@@ -18,15 +18,18 @@
 	salign := SizeofPtr
 
 	switch runtime.GOOS {
-	case "darwin", "dragonfly", "solaris":
-		// NOTE: It seems like 64-bit Darwin, DragonFly BSD and
-		// Solaris kernels still require 32-bit aligned access to
-		// network subsystem.
+	case "aix":
+		// There is no alignment on AIX.
+		salign = 1
+	case "darwin", "dragonfly", "solaris", "illumos":
+		// NOTE: It seems like 64-bit Darwin, DragonFly BSD,
+		// illumos, and Solaris kernels still require 32-bit
+		// aligned access to network subsystem.
 		if SizeofPtr == 8 {
 			salign = 4
 		}
-	case "openbsd":
-		// OpenBSD armv7 requires 64-bit alignment.
+	case "netbsd", "openbsd":
+		// NetBSD and OpenBSD armv7 require 64-bit alignment.
 		if runtime.GOARCH == "arm" {
 			salign = 8
 		}