Date: Fri, 20 Jul 2001 15:42:13 +0200 From: Olaf Wagner <wagner@elego.de> To: freebsd-stable@freebsd.org Cc: ume@freebsd.org Subject: isdn sppp unstable in RELENG_4 Message-ID: <20010720154213.A20465@elego.de>
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After updating our gateway machine to the latest stable source about a
week ago (sorry, didn't manage to write a notice earlier) suddenly about
90% of our ppp connections over isdn failed. Syslogd accumulated
hundreds of the following lines:
Jul 12 21:17:00 elegogw /kernel: isp1: ipv6cp open(initial)
Jul 12 21:17:00 elegogw /kernel: isp1: ipcp up(starting)
Jul 12 21:17:00 elegogw /kernel: isp1: ipcp output <conf-req id=0x6 len=4>
Jul 12 21:17:00 elegogw /kernel: isp1: ipv6cp up(starting)
Jul 12 21:17:00 elegogw /kernel: isp1: ipv6cp output <conf-req id=0x2f len=14 01-0a-02-00-c0-ff-fe-47-85-a2>
...
Jul 12 21:17:00 elegogw /kernel: isp1: lcp: ignoring RXJ (proto-rej) for proto 0x8057, danger will robinson
Obviously the sppp driver wanted to negotiate ipv6 protocols
with its peer, but didn't really know how to cope with an reject.
The source code says
case PROTO_REJ:
/* XXX catastrophic rejects (RXJ-) aren't handled yet. */
log(LOG_INFO,
SPP_FMT "%s: ignoring RXJ (%s) for proto 0x%x, "
"danger will robinson\n",
SPP_ARGS(ifp), cp->name,
sppp_cp_type_name(h->type), ntohs(*((u_short *)p)));
switch (sp->state[cp->protoidx]) {
All this was added in the recent KAME code merge:
revision 1.59.2.6
date: 2001/07/03 11:01:41; author: ume; state: Exp; lines: +774 -22
MFC: Sync with recent KAME.
This work was based on kame-20010528-freebsd43-snap.tgz and some
critical problem after the snap was out were fixed.
There are many many changes since last KAME merge.
The only way to get our isdn connections working again was to compile
a kernel without any INET6 support. As the code had been merged to
the stable branch, I think that this functionality should be disabled
for a while, or at least a HEADS UP be posted to the approriate mailing
lists, or the protocol rejections handled more gracefully.
Olaf
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