Should we change umb(4) so that it only grabs an IPv6 address
in case somebody does a "ifconfig umb0 inet6 eui64" first?
Anyone willing to ok the patch below?
On 2/19/20 9:19 AM, Gerhard Roth wrote:
On Wed, 19 Feb 2020 08:45:39 +0100 Claudio Jeker <[email protected]>
wrote:
On Tue, Feb 18, 2020 at 11:16:54PM +0000, Stuart Henderson wrote:
On 2020/02/18 13:40, Gerhard Roth wrote:
Yes, I tried MBIM_CONTEXT_IPTYPE_IPV4ANDV6 myself first but to no
avail. The switched to MBIM_CONTEXT_IPTYPE_IPV4V6 and everything
was fine.
Obviously it needs to switch based on INET6, but with the current
mechanism used for handling v6 in OpenBSD, shouldn't it disable v6
unless the interface has a link-local configured? (So the usual method
to enable v6 and bring an interface up would be "inet6 eui64" and "up").
That is how pppoe works.
Hi Stuart,
you mean like that?
Yes, that looks right - sorry I don't have a working umb to test though!
I guess we should then also adjust the manpage to make sure people know
how to enable IPv6 in hostname.umb0
Took a look at pppoe.4 and tried to extract what is needed for umb.4.
Updated diff below.
Gerhard
Index: share/man/man4/umb.4
===================================================================
RCS file: /cvs/src/share/man/man4/umb.4,v
retrieving revision 1.10
diff -u -p -u -p -r1.10 umb.4
--- share/man/man4/umb.4 18 Feb 2020 08:09:37 -0000 1.10
+++ share/man/man4/umb.4 19 Feb 2020 08:14:01 -0000
@@ -40,6 +40,19 @@ will remain in this state until the MBIM
In case the device is connected to an "always-on" USB port,
it may be possible to connect to a provider without entering the
PIN again even if the system was rebooted.
+.Pp
+To use IPv6, configure a link-local address before bringing
+the interface up.
+Some devices require the
+.Sy AUTOCONF6
+flag on the interface.
+.Pp
+A typical
+.Pa /etc/hostname.umb0
+looks like this:
+.Bd -literal -offset indent
+pin 1234 apn ISP-APN-Name inet6 eui64 autoconf -roaming up
+.Ed
.Sh HARDWARE
The following devices should work:
.Pp
Index: sys/dev/usb/if_umb.c
===================================================================
RCS file: /cvs/src/sys/dev/usb/if_umb.c,v
retrieving revision 1.32
diff -u -p -u -p -r1.32 if_umb.c
--- sys/dev/usb/if_umb.c 18 Feb 2020 08:09:37 -0000 1.32
+++ sys/dev/usb/if_umb.c 18 Feb 2020 12:35:45 -0000
@@ -2583,7 +2583,8 @@ umb_send_connect(struct umb_softc *sc, i
c->iptype = htole32(MBIM_CONTEXT_IPTYPE_IPV4);
#ifdef INET6
/* XXX FIXME: support IPv6-only mode, too */
- if ((sc->sc_flags & UMBFLG_NO_INET6) == 0)
+ if ((sc->sc_flags & UMBFLG_NO_INET6) == 0 &&
+ in6ifa_ifpforlinklocal(GET_IFP(sc), 0) != NULL)
c->iptype = htole32(MBIM_CONTEXT_IPTYPE_IPV4V6);
#endif
memcpy(c->context, umb_uuid_context_internet, sizeof (c->context));
