On Fri, Sep 25, 2020 at 07:10:00PM +0000, ѽ҉ᶬḳ℠ wrote: > Been trying to concatenate sets update: > > tcp dport @b_t update @b_sa4 { ip saddr } drop; > tcp dport @b_t update @b_sa6 { ip6 saddr } drop; > > with: > > tcp dport @b_t update @b_sa4 . @b_sa4 { ip saddr . ip6 saddr } drop; What's the intention here? > but that did not work out. Is somehow possible to concatenate sets update? Yes, you can do: tcp dport @b_t update @b_sa4 { ip saddr . ip6 saddr } drop You can update one single set at a time. Not sure what you expect from this concatenating sets instead of keys.