Score:1

syslog is filled with IPv6: MLD: clamping QRV from 1 to 2!

cn flag

My /var/log/syslog file is taking a lot of space and getting filled with an error message

 IPv6: MLD: clamping QRV from 1 to 2!  

and lots of other messages.

How can I find out what's causing this error and fix it?

Score:0
in flag

Looked a lot for a permanent fix, couldn't find one so

A temporary fix is just setting mld_qrv to 1

sudo sysctl net.ipv6.mld_qrv=1

You will have to do this on every restart.

To set it on every boot, add the line net.ipv6.mld_qrv=1 to the file /etc/sysctl.conf. (with thanks to user Erasmus Cedernaes).

Zanna avatar
kr flag
Perhaps you could add that line to `/etc/sysfs.conf`?
Erasmus Cedernaes avatar
tr flag
To set it on every boot, just add the line `net.ipv6.mld_qrv=1` to the file `/etc/sysctl.conf`
Score:0
in flag

Disable IPv6 (temporarily, till next reboot) using following commands:

  1. sudo sysctl -w net.ipv6.conf.all.disable_ipv6=1
  2. sudo sysctl -w net.ipv6.conf.default.disable_ipv6=1
  3. sudo sysctl -w net.ipv6.conf.lo.disable_ipv6=1

If it helps, can proceed for disabling IPv6 permanently.

ThunderBird avatar
ru flag
Is disabling IPv6 permanently really a good idea?
romeo1987 avatar
in flag
No, not in general. But for specific cases, there's no other option but to rely on IPv4.
ThunderBird avatar
ru flag
That's the point... You didn't specify it's not in general, but for specific cases.
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