[openssh-commits] [openssh] branch master updated: Use SSH_TUN_COMPAT_AF on FreeBSD.

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dtucker pushed a commit to branch master
in repository openssh.

The following commit(s) were added to refs/heads/master by this push:
     new 67a8bf4e4 Use SSH_TUN_COMPAT_AF on FreeBSD.
67a8bf4e4 is described below

commit 67a8bf4e4057597170bfa923fe2ce5bf90c43974
Author: Maxim Khon <fjoe at samodelkin.net>
AuthorDate: Mon Aug 18 12:05:42 2025 +0000

    Use SSH_TUN_COMPAT_AF on FreeBSD.
    
    Otherwise tun forwarding from other OSes fails as soon as the first IPv6
    message is sent by the other side (which is usually a Router Solicitation
    ICMPv6 message which is sent as soon as the interface is up): all other
    OS'es use SSH_TUN_COMPAT_AF or SSH_TUN_PREPEND_AF which effectively uses
    OpenBSD AF_INET/AF_INET6 values.
---
 configure.ac | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/configure.ac b/configure.ac
index df3869324..530875e85 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1120,6 +1120,8 @@ mips-sony-bsd|mips-sony-newsos4)
 *-*-freebsd*)
 	AC_DEFINE([LOCKED_PASSWD_PREFIX], ["*LOCKED*"], [Account locked with pw(1)])
 	AC_DEFINE([SSH_TUN_FREEBSD], [1], [Open tunnel devices the FreeBSD way])
+	AC_DEFINE([SSH_TUN_COMPAT_AF], [1],
+	    [Use tunnel device compatibility to OpenBSD])
 	AC_CHECK_HEADER([net/if_tap.h], ,
 	    AC_DEFINE([SSH_TUN_NO_L2], [1], [No layer 2 tunnel support]))
 	AC_DEFINE([BROKEN_GLOB], [1], [FreeBSD glob does not do what we need])

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