>> Kernel: Linux 4.19.0-6-amd64 (SMP w/1 CPU core) > > I think nft_synproxy was added to the linux kernel in v5.3 (and you seems to > be > using v4.19). Oh, I missed that dependency, thanks for the clarification.
> This is indeed a bug in the error handling which seems fixed in upstream > source > code for next release. Excellent. Best regards Bernhard Ehlers