Phil Sutter <phil@xxxxxx> wrote: > While you correctly hate the game instead of its player, you probably > hate the wrong game: The code above indeed is confusing. Maybe one > should move that monotonicity check into libxtables which should > simplify it quite a bit. I'll have a look. :) Something IS broken. Still not working on FC 39 test machine even after fresh clone. On a "working" VM: export XTABLES_LIBDIR=$(pwd)/extensions iptables/xtables-nft-multi ebtables -A INPUT --stp-root-cost 1 have 1 32765 @@ -150,7 +151,9 @@ static void brstp_parse(struct xt_option_call *cb) RANGE_ASSIGN("root-prio", root_prio, cb->val.u16_range); break; case O_RCOST: + fprintf(stderr, "have %u %u\n", cb->val.u32_range[0], cb->val.u32_range[1]); I can't even figure out where the correct max value is supposed to be set. Varying the input: xtables-nft-multi ebtables -A INPUT --stp-root-cost 1 have 1 32764 Looks to me as if the upper value is undefined. Other users of *RC versions handle it in .parse, e.g. libxt_length. No idea how this is working.