diff --git a/openbsc/tests/bsc-nat/barr.cfg b/openbsc/tests/bsc-nat/barr.cfg
new file mode 100644
index 0000000..a9a4a2b
--- /dev/null
+++ b/openbsc/tests/bsc-nat/barr.cfg
@@ -0,0 +1,12 @@
+12123124:3:2:
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+12123125:3:3:
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+12123118:3:4:
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+12123115:3:4: