At present (since NOINET6-by-default), pppoe(4) does not request IPV6CP unless

the pppoe interface already has a link-local address. Add to the config sample
showing how to do this with "inet6 eui64". Not ideal and may want further
changes in the driver, but since v6 over pppoe is broken for some people let's
at least document it for now. Also show the not-easy-to-guess "route add" line
that's needed. ok deraadt@ jmc@

1 files changed, 6 insertions, 2 deletions

diff --git a/share/man/man4/pppoe.4 b/share/man/man4/pppoe.4
index 1c7c293646f..387de882dd4 100644
--- a/share/man/man4/pppoe.4
+++ b/share/man/man4/pppoe.4
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: pppoe.4,v 1.26 2014/03/17 21:55:05 jmc Exp $
+.\"	$OpenBSD: pppoe.4,v 1.27 2014/10/08 12:57:51 sthen Exp $
 .\"	$NetBSD: pppoe.4,v 1.26 2003/10/02 07:06:36 wiz Exp $
 .\"
 .\" Copyright (c) 2002 The NetBSD Foundation, Inc.
@@ -28,7 +28,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: March 17 2014 $
+.Dd $Mdocdate: October 8 2014 $
 .Dt PPPOE 4
 .Os
 .Sh NAME
@@ -87,6 +87,8 @@ Configure authentication.
 The PPP session needs to identify the client to the peer.
 For more details on the available options see
 .Xr ifconfig 8 .
+.It
+If using IPv6, configure a link-local address.
 .El
 .Pp
 This all is typically accomplished using an
@@ -94,11 +96,13 @@ This all is typically accomplished using an
 file.
 A typical file looks like this:
 .Bd -literal -offset indent
+inet6 eui64
 inet 0.0.0.0 255.255.255.255 NONE \e
 	pppoedev em0 authproto pap \e
 	authname 'testcaller' authkey 'donttell' up
 dest 0.0.0.1
 !/sbin/route add default -ifp pppoe0 0.0.0.1
+!/sbin/route add default -ifp pppoe0 fe80::
 .Ed
 .Pp
 The physical interface must also be marked