No longer consider IN_EXPERIMENTAL aka 240/4 as not forwardable.

We already allow 240/4 in and out so lets allow it through as well.
One of many steps to make 240/4 useable.
Diff by Seth David Schoen (schoen at loyalty.org)
OK bluhm@ djm@

diff --git a/sys/netinet/in.c b/sys/netinet/in.c
index 49850ac..74de12f 100644 (file)
--- a/sys/netinet/in.c
+++ b/sys/netinet/in.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: in.c,v 1.173 2022/03/28 16:31:26 bluhm Exp $  */
+/*     $OpenBSD: in.c,v 1.174 2022/05/05 08:43:37 claudio Exp $        */
 /*     $NetBSD: in.c,v 1.26 1996/02/13 23:41:39 christos Exp $ */
 
 /*
@@ -103,7 +103,7 @@ in_canforward(struct in_addr in)
 {
        u_int32_t net;
 
-       if (IN_EXPERIMENTAL(in.s_addr) || IN_MULTICAST(in.s_addr))
+       if (IN_MULTICAST(in.s_addr))
                return (0);
        if (IN_CLASSA(in.s_addr)) {
                net = in.s_addr & IN_CLASSA_NET;