[SOLVED]High CPU load - Pfsense 2.1+CP+multisubnet+ 300 plus MAC pasthrough

[dedieko]

Hello

I would like to report something

I use pfsense 2.1 as intervlan routing to my campus
All LAN clients in VLANS are able to be pinged from WAN
Intervlan function seem to be working fine.

campus
10.0.0.0/8
      |
      |
10.44.1.254/24
pfsense
      |
  (trunk)
      |
Layer 2
Switch
      |
VLANS
10.44.x.x/24

Then, I activated the captive portal to auth access to our hotspot VLANs ( we have 5 VLANs, one for each floor)
To provide ROAMING function , I use passthrough MAC function Auto entry, so when new user logged-in to one hotspot VLANs, his/her MAC are stored in passthrough MAC table, along with his/her username.

After users started to logged in, within minutes, lots of MACs are stored to the table
By this time, I started to see pattern of CPU spike every 60 minutes.

What do you guys think this is? Is this normal for Captive Portal with 300+ MACs in the passthrough table?
Thanks for all reply.

[dedieko]

I think I found a solution from this thread

https://forum.pfsense.org/index.php?topic=51468.0

I did 2 changes:

1. Change WAN IPV6 Configuration, from DHCP to NONE
2. Advanced - Networking - IPV6, uncheck Allowed IPV6

Problem solved. I hope it will help other people.
Thanks