diff --git a/docs/source/pcapkit/const/linux.rst b/docs/source/pcapkit/const/linux.rst
index 30cded4b64..0cd0b5d10e 100644
--- a/docs/source/pcapkit/const/linux.rst
+++ b/docs/source/pcapkit/const/linux.rst
@@ -10,7 +10,7 @@ Available enumerations include:
 
 .. list-table::
 
-   * - :class:`ARPHRD <pcapkit.const.linux.arphrd.ARPHRD>`
+   * - :class:`Linux_ARPHRD <pcapkit.const.linux.arphrd.ARPHRD>`
      - Linux ARP Hardware Types [*]_
 
 ARP Hardware Types
diff --git a/pcapkit/const/__init__.py b/pcapkit/const/__init__.py
index ebb70523f9..78ff490ec6 100644
--- a/pcapkit/const/__init__.py
+++ b/pcapkit/const/__init__.py
@@ -29,6 +29,7 @@
 from pcapkit.const.ipv6 import *
 from pcapkit.const.ipx import *
 from pcapkit.const.l2tp import *
+from pcapkit.const.linux import *
 from pcapkit.const.mh import *
 from pcapkit.const.ngap import *
 from pcapkit.const.ospf import *
@@ -78,6 +79,8 @@
     'IPX_Packet', 'IPX_Socket',
     # L2TP
     'L2TP_Type',
+    # Linux
+    'Linux_ARPHRD',
     # MH
     'MH_Packet', 'MH_Option', 'MH_DNSStatusCode', 'MH_ACKStatusCode',
     'MH_MNIDSubtype', 'MH_StatusCode', 'MH_EnumeratingAlgorithm',
diff --git a/pcapkit/const/linux/__init__.py b/pcapkit/const/linux/__init__.py
index bbdd28f49c..5e7d20e901 100644
--- a/pcapkit/const/linux/__init__.py
+++ b/pcapkit/const/linux/__init__.py
@@ -9,11 +9,11 @@
 
 .. list-table::
 
-   * - :class:`ARPHRD <pcapkit.const.linux.arphrd.ARPHRD>`
+   * - :class:`Linux_ARPHRD <pcapkit.const.linux.arphrd.ARPHRD>`
      - Linux ARP Hardware Types
 
 """
 
-from pcapkit.const.linux.arphrd import ARPHRD
+from pcapkit.const.linux.arphrd import ARPHRD as Linux_ARPHRD
 
-__all__ = ['ARPHRD']
+__all__ = ['Linux_ARPHRD']
diff --git a/tests/const/test_const_linux_export_2661_unit.py b/tests/const/test_const_linux_export_2661_unit.py
new file mode 100644
index 0000000000..0e36633c96
--- /dev/null
+++ b/tests/const/test_const_linux_export_2661_unit.py
@@ -0,0 +1,51 @@
+# -*- coding: utf-8 -*-
+"""Unit tests for the :mod:`pcapkit.const.linux` package surface (#2661).
+
+Every other package of :mod:`pcapkit.const` re-exports its registries under a
+package prefix, and :mod:`pcapkit.const` star-imports each package so the names
+reach its own ``__all__``. The Linux package did neither, and
+:mod:`pcapkit.vendor.linux` already exports its crawler as ``Linux_ARPHRD``.
+
+"""
+from __future__ import annotations
+
+import unittest
+
+#: Test tier (#1958): pure-Python attribute lookups, which behave the same on
+#: every interpreter.
+__tier__ = 'LATEST'
+
+
+class LinuxConstSurfaceTests(unittest.TestCase):
+    """:mod:`pcapkit.const.linux` and its place in :mod:`pcapkit.const`."""
+
+    def test_package_exports_the_registry_under_a_package_prefix(self) -> None:
+        import pcapkit.const.linux
+        from pcapkit.const.linux.arphrd import ARPHRD
+
+        self.assertEqual(pcapkit.const.linux.__all__, ['Linux_ARPHRD'])
+        self.assertIs(pcapkit.const.linux.Linux_ARPHRD, ARPHRD)
+
+    def test_const_package_re_exports_the_registry(self) -> None:
+        import pcapkit.const
+        from pcapkit.const.linux.arphrd import ARPHRD
+
+        self.assertIn('Linux_ARPHRD', pcapkit.const.__all__)
+        self.assertIs(pcapkit.const.Linux_ARPHRD, ARPHRD)
+
+    def test_star_import_of_const_binds_the_registry(self) -> None:
+        from pcapkit.const.linux.arphrd import ARPHRD
+
+        namespace = {}  # type: dict[str, object]
+        exec('from pcapkit.const import *', namespace)  # pylint: disable=exec-used
+        self.assertIs(namespace['Linux_ARPHRD'], ARPHRD)
+
+    def test_names_pair_with_the_vendor_crawler(self) -> None:
+        import pcapkit.const.linux
+        import pcapkit.vendor.linux
+
+        self.assertEqual(pcapkit.const.linux.__all__, pcapkit.vendor.linux.__all__)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/tests/project/test_const_package_exports_2656_unit.py b/tests/project/test_const_package_exports_2656_unit.py
index 5c299540fa..76915145bf 100644
--- a/tests/project/test_const_package_exports_2656_unit.py
+++ b/tests/project/test_const_package_exports_2656_unit.py
@@ -52,13 +52,9 @@
 }
 
 #: Registry packages of :mod:`pcapkit.const` that :file:`pcapkit/const/__init__.py` does not
-#: re-export, a recorded defect (#2661). Each reason names what is missing. Wiring a package
-#: deletes its entry, which ``test_unwired_entries_hold`` enforces.
-KNOWN_UNWIRED = {
-    'linux': 'no "from pcapkit.const.linux import *" in pcapkit/const/__init__.py, and the name '
-             'is unprefixed: pcapkit.const.linux.__all__ lists ARPHRD, where the house prefix '
-             'gives Linux_ARPHRD, as pcapkit.vendor.linux.__all__ lists it',
-}
+#: re-export, a recorded defect. Each reason names what is missing and the issue that tracks
+#: it. Wiring a package deletes its entry, which ``test_unwired_entries_hold`` enforces.
+KNOWN_UNWIRED = {}  # type: dict[str, str]
 
 #: A ``.. toctree::`` directive, capturing its indentation.
 TOCTREE = re.compile(r'^(\s*)\.\. toctree::\s*$')