We have a set up that we have been experiencing problems with for more than a year.
We have found a work around to the issue that 'fixes' it by turning off "offloading ipv4 forwarding". When the problem is happening, we can see traffic come in on interface A that should be destined for something attached to interface B, but the traffic never leaves interface B. If we disable offloading, the traffic works as expected and we can see both incoming and outgoing traffic on both interfaces.
My question: How would I go about "inspecting" the packets that are being "sent" to and from the offloading module(s)?
As it is probably clear from this post, I have never done work with offloading. I don't know that what I am asking is even possible, but I'm curious how to troubleshoot an offloading problem like this. I would just like to know a little more about what the traffic looks like as it is sent to the offload and what it looks like after the offload has done its thing.
Thanks in advance. Any links with useful information or words of advice are greatly appreciated.