tests: shell: deletion from interval concatenation

Deleting item from concatenated set stops working at least in 5.15.64.
Add test to cover this use case.

Closes: https://bugzilla.netfilter.org/show_bug.cgi?id=1638
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

2 files changed, 25 insertions, 0 deletions

diff --git a/tests/shell/testcases/sets/concat_interval_0 b/tests/shell/testcases/sets/concat_interval_0
new file mode 100755
index 00000000..3812a94d
--- /dev/null
+++ b/tests/shell/testcases/sets/concat_interval_0
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+set -e
+
+RULESET="table ip t {
+	set s {
+		type ipv4_addr . inet_proto . inet_service
+		flags interval
+		counter
+		elements = { 1.0.0.1 . udp . 53 }
+	}
+}"
+
+$NFT -f - <<< $RULESET
+
+$NFT delete element t s { 1.0.0.1 . udp . 53}
+
+exit 0
diff --git a/tests/shell/testcases/sets/dumps/concat_interval_0.nft b/tests/shell/testcases/sets/dumps/concat_interval_0.nft
new file mode 100644
index 00000000..875ec1d5
--- /dev/null
+++ b/tests/shell/testcases/sets/dumps/concat_interval_0.nft
@@ -0,0 +1,7 @@
+table ip t {
+	set s {
+		type ipv4_addr . inet_proto . inet_service
+		flags interval
+		counter
+	}
+}