Re: [PATCH net 0/4] net/sched: reset conntrack after packet munging

On 8/20/26 1:58 PM, Jamal Hadi Salim wrote:
> 
>> And that doesn't solve BPF (can sit anywhere) or OVS (no idea here if
>> its affected or not).
> 
> OVS is very likely affected.
OVS should not be affected.  OVS doesn't allow arbitrary changes.
It can change mac/ip addresses or ports, but it can't change protocol
numbers or other things specific to a protocol in the original skb.
Unlike pedit or bpf that can just write data at random offsets.

The only way to dramatically change the packet is to push/pop a new
header like mpls or nsh, but that triggers a full packet re-parsing
and no metadata about the original packet should survive.  If it does,
that would be a bug in OVS.

Best regards, Ilya Maximets.