ipv6 broken: radvd: can't join ipv6-allrouters on <interface>

Irata

It's "working" here too with a radvd restart every 6 hours. I do a radvd service restart via Cron instead of a kill, which seemed cleaner but my approach causes IPv6 sessions to be dropped when the prefix is unadvertised briefly.

Looking at the source code, that spam logging should not even be executing on a freebsd platform. So maybe it's a hint of what's broken.

maverick_slo

After 6 days my IPv6 died as well.
Static assigned IPv6 works just fine, slaac and RA doesn`t. Client does not get IPv6 address at all.

LOG:
Aug 6 09:48:50 radvd 35714 can't join ipv6-allrouters on hn0.9
Aug 6 09:48:50 radvd 35714 IPv6 forwarding on interface seems to be disabled, but continuing anyway
Aug 6 09:48:10 radvd 35714 can't join ipv6-allrouters on hn0.7
Aug 6 09:48:10 radvd 35714 IPv6 forwarding on interface seems to be disabled, but continuing anyway
Aug 6 09:47:15 radvd 35714 can't join ipv6-allrouters on hn0.10
Aug 6 09:47:15 radvd 35714 IPv6 forwarding on interface seems to be disabled, but continuing anyway
Aug 6 09:44:37 radvd 35714 can't join ipv6-allrouters on hn0.10
Aug 6 09:44:37 radvd 35714 IPv6 forwarding on interface seems to be disabled, but continuing anyway
Aug 6 09:43:06 radvd 35714 can't join ipv6-allrouters on hn0.7
Aug 6 09:43:06 radvd 35714 IPv6 forwarding on interface seems to be disabled, but continuing anyway
Aug 6 09:42:05 radvd 35714 can't join ipv6-allrouters on hn0.8
Aug 6 09:42:05 radvd 35714 IPv6 forwarding on interface seems to be disabled, but continuing anyway
Aug 6 09:41:55 radvd 35714 can't join ipv6-allrouters on hn0.9
Aug 6 09:41:55 radvd 35714 IPv6 forwarding on interface seems to be disabled, but continuing anyway
Aug 6 09:41:46 radvd 35714 can't join ipv6-allrouters on hn0.10

Ah well....

yon 0

me too . how fix it?

alt text

kiokoman

for the moment afaik only this -> https://forum.netgate.com/post/851662

yon 0

@kiokoman said in ipv6 broken: radvd: can't join ipv6-allrouters on <interface>:

i put here a workaround that seems to work for me

[2.5.0-DEVELOPMENT][root@pfSense.localdomain]/root: crontab -l
@hourly killall radvd && sleep 5 && /usr/local/sbin/radvd -p /var/run/radvd.pid -C /var/etc/radvd.conf -m syslog

What is this principle?

kiokoman

restart Router Advertisement Daemon every hour, to me the problem arise every some hours so restarting it mitigate the problem

yon 0

@kiokoman

I tried to restart the service yesterday and did not solve the problem. Restart the system to work.I have problems after about 20 hours of running.

kiokoman

well i dont know how to solve the problem, you have 2 options, wait for the staff to solve it or go back to 2.4.4

Irata

@yon-0 a restart using the GUI doesn't work, you need to stop the service, wait 5 seconds and start the service.

Or script it using cron, as suggested.

yon 0

@Irata said in ipv6 broken: radvd: can't join ipv6-allrouters on <interface>:

@yon-0 a restart using the GUI doesn't work, you need to stop the service, wait 5 seconds and start the service.

Or script it using cron, as suggested.

ye, this is work. but we still need waiting for admin fix it.

strangegopher

Just tired enabling RA again and still having issues with log spam and dropouts.

w0w

My ISP disabled Ipv6 last month, so I am using HE tunnel now.
Same problem as TS mentioned — SPAM and drops after some hours.

Irata

Interesting, I'm using an HE tunnel too

w0w

@Irata
I am not sure that my ISP native Ipv6 have been working, so I don't think it's HE related. I am parsing tons of syslog messages now, let me see, if I find something, I'll let you know.

maverick_slo

I have native with same issues...

strangegopher

my isp has ipv6, no tunnel. i don't think that matters. at this point i think everyone is affected.

kiokoman

nope, nothing to do with tunnel, it's radvd that is broken

w0w

According to my logs there was no any problem with ISP Ipv6, but it was special case — configured to track PPPoE interface and used stateless DHCP router mode, DHCPv6 server not enabled.

w0w

@kiokoman said in ipv6 broken: radvd: can't join ipv6-allrouters on <interface>:

i put here a workaround that seems to work for me

[2.5.0-DEVELOPMENT][root@pfSense.localdomain]/root: crontab -l
@hourly killall radvd && sleep 5 && /usr/local/sbin/radvd -p /var/run/radvd.pid -C /var/etc/radvd.conf -m syslog

Sorry for dumb question but where does it stored? I have executed this command, but I don't see anything similar in cron package. I can not also find any modified file on a system.

kiokoman

contrab -l (list)
crontab -e (edit)
from the terminal
you need to edit crontab with

crontab -e

then copy/past what i have in my crontab

@hourly killall radvd && sleep 5 && /usr/local/sbin/radvd -p /var/run/radvd.pid -C /var/etc/radvd.conf -m syslog

or you can install the cron pkg available in the gui and add

killall radvd && sleep 5 && /usr/local/sbin/radvd -p /var/run/radvd.pid -C /var/etc/radvd.conf -m syslog

as command line
what does it do: kill radvd & wait 5 seconds & restart radvd