Hi,
if you define a DNAT Rule on Port 1234, the traffic was terible slow.
now i delete this DNAT Rule and prob to make a WAF one and i got the error, that this port will be used from cssd.
i don't know what is cssd, but after i switch to port 12345 the service will be back with normal speed.
so the DNAT Rule has a bug and don't report that another Service use the Port 1234 and this bounce from DNAT to CSSD and back i think so.
kind regards
Alex