$OpenBSD: patch-lib_isc_unix_socket_c,v 1.8 2018/07/12 10:12:30 sthen Exp $
Index: lib/isc/unix/socket.c
--- lib/isc/unix/socket.c.orig
+++ lib/isc/unix/socket.c
@@ -2883,7 +2883,7 @@ opensocket(isc__socketmgr_t *manager, isc__socket_t *s
 		}
 #endif
 	}
-#ifdef IPV6_RECVTCLASS
+#if 0 /* pledge doesn't allow setsockopt IPV6_RECVTCLASS */
 	if ((sock->pf == AF_INET6)
 	    && (setsockopt(sock->fd, IPPROTO_IPV6, IPV6_RECVTCLASS,
 			   (void *)&on, sizeof(on)) < 0)) {
