Suricata / Netmap Crashing on High Traffic Stable 2.4.5 Broken 2.5.1

[ViciousXUSMC]

System:
Dell R210ii
Xeon E3-1230 V2 and 8GB of RAM
NIC IGB Intel 4 Port in PCI Slot used, and on board BCE Broadcom NIC not used.
Already check HDD, RAM and System Temps to ensure that is not the issue.
Setup was stable on 2.4.5 and only broke after the recent update to 2.5.1

Issues are most definitely based around Netmap and Suricata running in in-line mode.
ISP Service is 500/500mbps

Something like a speedtest wont crash the box, but will generate some errors. Something like Steam or Origin crashes the box almost immediately.
LAN Interface goes down, does not recover until reboot.

The Error seems to be surrounding "netmap_ring_reinit" I have some tunables for my Intel adapter and issues surrounding this. But as of now I do not have this stable, hoping there is a fix short of rolling back to 2.4.5

Tunables:
dev.igb.X.eee_disabled=1
dev.igb.X.fc=0
dev.netmap.buf_size=8192
dev.igb.X.eee_control=0
kern.ipc.maxsockbuf=4262144

I think that is the only ones I have entered not already populated by the system as defaults.

I have all hardware offloading disabled per all the reading I have done even though I think the intel card supports many of them. With more than enough RAM, CPU, Etc I didn't mind the losses of speed for the sake of stability.

Already checked temps, RAM, etc, the system is fine.

Crash after opening Steam

Changed Netmap to Emulated Mode using dev.netmap.admode=2 still crashed but looked different and my uploads went to garbage.

And last here is running a speedtest, errors but did not crash. When its in a crash state these move so fast you cant see anything. I am also not sure if there is any recovery short of a reboot.

Bonus: As I am messing with this, if I make a System Tunable change that crashes the LAN interface and the Web Interface, I still have console access via the iDRAC, is there a way from the Shell to un-do a tunable change? I am assuming there is a simple config file in the file system I can modify?

[SteveITS]

@viciousxusmc said in Suricata / Netmap Crashing on High Traffic Stable 2.4.5 Broken 2.5.1:

Netmap and Suricata running in in-line mode

See various posts from bmeeks about this on 2.5.x/FreeBSD 12, e.g. https://forum.netgate.com/topic/163853/snort-and-internet-speed-problem/9. It sounds like inline may be more problematic on 12.