Hi Marco,

Thanks for pointing out the issue. I'll look into that.

However there's no NAT applicable in our specific case. In addition: no trouble so far.

But again, good to re-investigate.

Maybe it's a nice side thread on the list as well. I'm curious about real life kernel tweaking at other's platform.

Cheers,
Kees

On 17-03-2021 12:55, Marco d'Itri wrote:
This is ***BAD***.
tcp_tw_recycle is toxic because it breaks NATs, and has even been
removed from recent kernels. Do not EVER set it.
tcp_tw_reuse is only relevant for outgoing connections.

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