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Sensei impacts the graphical traffic widget

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Darkopnsense:
hello mb,

Since upgrading to version 20.7 I have the OUT traffic graph widget.

When you stop sensei, the traffic graph widget works.

I have of course checked my statements on my different configurations.

Situation still valid in version 20.7.3

Regards,

French mother tongue.

athurdent:
Seems to be related to Netmap. Zabbix Client is not getting any useful data from LAN (Sensei with Netmap) and WAN1 (Suricata in IPS mode) here, too.

mb:
Does setting net.bpf.zerocopy_enable to 1 help?

From: https://docs.opnsense.org/troubleshooting/network.html


--- Quote ---Use zero-copy for bpf(4) for faster processing, when not set (the default) packets will not be seen by bpf, which influences the traffic graphs for example.
--- End quote ---

athurdent:
Just set

--- Code: ---# sysctl net.bpf.zerocopy_enable=1
net.bpf.zerocopy_enable: 0 -> 1
--- End code ---
but LAN (igb0) with Sensei in Netmap mode is still flatlining, Zabbix is not picking up traffic either.

mb:
A reboot might be necessary to apply the setting before any services are started. Better to put in Misc -> Tunables so that this survives reboots.

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