darius <dram@xxxxxxxxxxx> wrote: > I have checked link provided by you. This patch is already implemented > on 4.14 kernel that runs on OpenWRT, but that does not help with the > error. I still have fault. > Any other ideas where to check? Just would be nice to find where is problem. No. If you know some C, edit net/netfilter/nf_tables.c, search for nft_select_set_ops() and check which set type is picked. ops needs to be "nft_set_rhash_type", thats the only one where ops->update is non-NULL.