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; but that did not work out. Is somehow possible to concatenate sets update?