As reported by both Pablo and Phil, trying to add an anonymous set containing a concatenated range would fail: # nft add rule x y ip saddr . tcp dport { 192.168.2.1 . 20-30 } accept BUG: invalid range expression type concat nft: expression.c:1160: range_expr_value_low: Assertion `0' failed. Aborted # nft add rule t c ip daddr . tcp dport '{ 10.0.0.0/8 . 10-23, 192.168.1.1-192.168.3.8 . 80-443 } accept' BUG: invalid range expression type concat nft: expression.c:1296: range_expr_value_low: Assertion `0' failed. Patch 1/2 fixes this, and 2/2 adds a simple test for it. Stefano Brivio (2): evaluate: Perform set evaluation on implicitly declared (anonymous) sets tests: shell: Introduce test for concatenated ranges in anonymous sets src/evaluate.c | 5 ++++- tests/shell/testcases/sets/0048anonymous_set_concat_0 | 7 +++++++ .../testcases/sets/dumps/0048anonymous_set_concat_0.nft | 6 ++++++ 3 files changed, 17 insertions(+), 1 deletion(-) create mode 100755 tests/shell/testcases/sets/0048anonymous_set_concat_0 create mode 100644 tests/shell/testcases/sets/dumps/0048anonymous_set_concat_0.nft -- 2.26.2