WAN2 IPv4 stopped working, DHCP works, no ping

[ualex]

I have 2 WAN interfaces, and this worked until a while ago fine. A few weeks ago it seem to stop working (I did not notice it :-(). I did not make any change to my config. I also tried to reboot and upgrade, but no difference.

The behavior I am seeing on WAN2 is as follows:
1) It comes up successfully after reboot
2) It gets a IPv4 and IPv6 address via DHCP successfully
    Renewing DHCP and running tcpdump, show I can do it continuously, so the uplink is fine
3) Initial ping in the system->gateway looks fine, a good RTT shown
4) After a few minutes it turns red and WAN2 is down for IPv4
5) IPv6 continues to work fine (with ping and traffic)

When I check the CLI, I see the routing correctly on WAN2:

root@opnsense:~ # netstat -rn | grep 192.168.178
192.168.178.0/24   link#3             U        vtnet2
192.168.178.164    link#4             UHS         lo0

But ping is failing with a weird error:

root@opnsense:~ # ping 192.168.178.1
PING 192.168.178.1 (192.168.178.1): 56 data bytes
ping: sendto: Permission denied
ping: sendto: Permission denied

Anybody has an idea how to fix this WAN2? Otherwise I can cancel my subscription for my backup WAN2 :-(

BTW, I cannot ping my own assigned IP via DHCP (it is the only device attached, so no duplicate IP anywhere):

root@opnsense:~ # ping 192.168.178.164
PING 192.168.178.164 (192.168.178.164): 56 data bytes
^C
--- 192.168.178.164 ping statistics ---
15 packets transmitted, 0 packets received, 100.0% packet loss

[biricon]

I search a simular problem right now and i find out, if i have more than 600GBit/s traffic between 2 VLANs the load goes extremly up and the Opnsense Stops interfaces.

I dont know why, but i can reproduce the issue. If the Backups running and i reach 1,2Gib/s (i have 20Gbit backbone) the Version 24.7.10 stop working.

In my case the 20Gbit Uplink and the WAN connectivity lost complete and the Top shows a load of ~ 16-20.

After i stop the Backups and the load is down, i dont have this issue anymore.

[ualex]

Interesting, but I have almost no traffic on my network. It is a home network, transferring files happens only once or twice a week.

[ualex]

Anybody has seen this issue before?