D. Wythe <alibuda@xxxxxxxxxxxxxxxxx> wrote: > And my origin intention was to allow ebpf progs to return NF_STOLEN, we are > trying to modify some netfilter modules via ebpf, > and some scenarios require the use of NF_STOLEN, but from your description, NF_STOLEN can only be supported via a trusted helper, as least as far as I understand. Otherwise verifier would have to guarantee that any branch that returns NF_STOLEN has released the skb, or passed it to a function that will release the skb in the near future.