[solved] PPPoE IA-PD woes

Guest

I'll snapshot my test system and do the patches, then I'll throw some curved balls at it and see if I can replicate the monitoring issue. On a side note, I'm changing ISP in a couple of weeks and my v6 will no longer be dhcp6 without RA ( that's a mismomer and we should change it! ) but similar to Mav*Slo, so I will be able to see exactly what's going on there.

maverick_slo

No no, gateway monitoring is just consequence…

Look what I mean:

When things are 100% OK:


Status
    up
PPPoE
    up 
Uptime
    00:01:50
MAC Address
    00:00:00:00:00:00
IPv4 Address
    212.xx.xx.xxx
Subnet mask IPv4
    255.255.255.255
Gateway IPv4
    212.xx.xx.xxx
IPv6 Link Local
    fe80::xxx:xxx:xxxx:xxxx%pppoe0
IPv6 Address
    2001:xxxx:xxx:x:xxx:xxx:xxxx:xxxx
Subnet mask IPv6
    64
Gateway IPv6
    fe80::xxx:xxxx:xxxx:xxxx
MTU
    1492
In/out packets
    1543787/651379 (1.61 GiB/46.27 MiB)
In/out packets (pass)
    1543787/651379 (1.61 GiB/46.27 MiB)
In/out packets (block)
    2393/0 (137 KiB/0 B)
In/out errors
    0/0
Collisions
    0

And when there is no IPv6 on PPPoe:


Status
    up
PPPoE
    up 
Uptime
    00:00:23
MAC Address
    00:00:00:00:00:00
IPv4 Address
    212.xx.xx.xxx
Subnet mask IPv4
    255.255.255.255
Gateway IPv4
    212.xx.xx.xxx
IPv6 Link Local
    fe80::xxx:xxx:xxxx:xxxx%pppoe0
Gateway IPv6
    fe80::xxx:xxxx:xxxx:xxxx
MTU
    1492
In/out packets
    1545272/656932 (1.61 GiB/46.65 MiB)
In/out packets (pass)
    1545272/656932 (1.61 GiB/46.65 MiB)
In/out packets (block)
    2418/0 (137 KiB/0 B)
In/out errors
    0/0
Collisions
    0

Guest

Can you do a test for me, go to the shell, and firstly check that dhcp6c is running, if it is, then can you send it a SIGHUP, SIGHUP being 'kill -1 PID', see if that makes it recover.

maverick_slo

DHCP6c IS running.

root    39375   0.9  0.1   8348   2328  -  Ss   10:04      0:00.00 /usr/local/sbin/dhcp6c -D -c /var/etc/dhcp6c_opt2.conf -p /var/run/dhcp6c_pppoe0.pid pppoe0

Killed it:


kill -1 39375

No change on pppoe :(

maverick_slo

And quite a lot of:


Mar 12 10:14:33 	php-fpm 	80662 	/rc.newwanip: ROUTING: setting IPv6 default route to fe80::xxx:xxx:xxxx:xxxx%pppoe0
Mar 12 10:14:33 	php-fpm 	60486 	/rc.newwanipv6: rc.newwanipv6: No IPv6 address found for interface PPPOE [opt2].
Mar 12 10:14:33 	php-fpm 	60486 	/rc.newwanipv6: rc.newwanipv6: Info: starting on pppoe0\. 
Mar 12 10:14:31 	php-fpm 	80662 	/rc.newwanipv6: rc.newwanipv6: No IPv6 address found for interface PPPOE [opt2].
Mar 12 10:14:31 	php-fpm 	80662 	/rc.newwanipv6: rc.newwanipv6: Info: starting on pppoe0.
Mar 12 10:14:31 	rtsold 		Starting dhcp6 client for interface opt2(pppoe0)
Mar 12 10:14:31 	rtsold 		Received RA specifying route fe80::xxx:xxx:xxxx:xxxx for interface opt2(pppoe0)

Guest

What do the dhcp logs show at that moment?

maverick_slo

Actually same as when it works… I see nothing special there...

Guest

So it appears dhcp6c is working, and by the look of it so is RTSOLD. Hmm, pppoe thing. Not even sure if it's related or not.

Try this, see if it makes any difference. Just add it on the end of the others.

c3b55b8a0aee8fde7474738d08a993ed32ee3282

maverick_slo

Parse error: syntax error, unexpected ')' in /etc/inc/interfaces.inc on line 3303 Call Stack: 0.0001 226808 1. {main}() /usr/local/www/system_patches.php:0 0.0002 227304 2. require('/usr/local/www/guiconfig.inc') /usr/local/www/system_patches.php:29 0.0005 248832 3. require_once('/etc/inc/authgui.inc') /usr/local/www/guiconfig.inc:47 0.0005 249416 4. include_once('/etc/inc/auth.inc') /etc/inc/authgui.inc:25 0.0005 249848 5. require_once('/etc/inc/config.gui.inc') /etc/inc/auth.inc:30 0.0015 270984 6. require_once('/etc/inc/notices.inc') /etc/inc/config.gui.inc:37 0.0016 271392 7. require_once('/etc/inc/functions.inc') /etc/inc/notices.inc:24

:(

Guest

Nuts… Didn't test it.. Give me ten minutes.

maverick_slo

Fixed it myself…
Just removed extra ")"... testing now

maverick_slo

Not helped

Guest

Baffled. ???

So it works unless you pull the link for more than 'n' seconds though. So what's changing after that 'n' seconds that's preventing a recovery?

Do we need to send another RA and reset the whole sequence, we know that dhcp6c is running bit a kick up the bum with a SIGHUP did not fix it. Try running the RTSOLD script from the shell and see if that kicks anything into life. It should report lock in place etc but will send out an RS.

maverick_slo

Yeah link flap for 10 seconds or less is ok… As soon as last lcp is missed and pppoe starts reconnecting if I then plug utp back in no ipv6 address on pppoe...
How do I run rtsold script from shell?
Will try it in hour or 2 when I come home...

Guest

@maverick_slo:

Yeah link flap for 10 seconds or less is ok… As soon as last lcp is missed and pppoe starts reconnecting if I then plug utp back in no ipv6 address on pppoe...
How do I run rtsold script from shell?
Will try it in hour or 2 when I come home...

In /Var/etc you should see a script something like rtsold_{IFACE}_script.sh, where {IFACE} is the interface you are interested in.

To run it, just do ./ rtsold_{IFACE}_script.sh

I'll squash down those commits it's getting untidy.

Guest

OK, I've squashed all those commits down to a single pair.

718cbc2d3921627e9767e59d539386c843dffcc4 - Reasons
07c304a5593e4fc7d574964bbf3641f92c16d8fa - Wan flap

maverick_slo

When I run rtsold script:

Mar 12 13:15:49 	php-fpm 	72012 	/rc.newwanipv6: rc.newwanipv6: No IPv6 address found for interface PPPOE [opt2].
Mar 12 13:15:49 	php-fpm 	72012 	/rc.newwanipv6: rc.newwanipv6: Info: starting on pppoe0.
Mar 12 13:15:49 	php-fpm 	75079 	/rc.filter_configure_sync: Gateways status could not be determined, considering all as up/active. (Group: GWGRP_IPv6)
Mar 12 13:15:47 	rtsold 		RTSOLD Lock in place - sending SIGHUP to dhcp6c
Mar 12 13:15:47 	rtsold 		Received RA specifying route for interface opt2(pppoe0)

So still no IPv6 address on iface PPPOE.
Weird.

maverick_slo

I think it will only get ipv6 address when connecting and no later…

Only thing that is 1000% is disconnect/connect from interfaces page or save/apply on pppoe iface settings page.
In those 2 cases ipv6 is ALWAYS assigned.

Guest

Yes, I was doing a bit of reading, think it's a pppoe thing - note my earlier comment about changing ISP, I'll find out soon!

Just remembered, my current ISP is a little wierd in that respect too, if I don't send a dhcp6 solict within a set period after a v4 solicit then no ipv6. The v4 solicit also contains the credentials so the only solution is drop the link, wait 5 minutes until the ISP's BNG resets and start the login again.

maverick_slo

Ahh we just both posted at the same time :)

See above I`ve edited post…

Yeah, this is pppoe thingie I think that too...

PPPoE is really tricky sometimes...

But you`ve fixed flapping issue thanks a bunch!!