Index: dialin/squish/unittests.py
===================================================================
diff -u -re9104e0b4a45a64840a7cb66a115839698129844 -r5bdaabbf259b9ceca0377a5d4a5030ee2e59c264
--- dialin/squish/unittests.py	(.../unittests.py)	(revision e9104e0b4a45a64840a7cb66a115839698129844)
+++ dialin/squish/unittests.py	(.../unittests.py)	(revision 5bdaabbf259b9ceca0377a5d4a5030ee2e59c264)
@@ -27,6 +27,7 @@
 #
 import test
 import sys
+from subprocess import check_output
 
 import names
 if names.DIALIN_LINK:
@@ -70,3 +71,17 @@
     test.compare(crc.calcCRC8(strByte2, ' '), '55')
     test.compare(crc.calcCRC8(strByte3, ' '), '4F')
     test.compare(crc.calcCRC8(strByte4, ' '), '7F')
+
+def test_can0():
+    canid = "can0"
+    ipa = "ip a"
+    ipa = check_output(ipa, shell=True)
+    loc = str(ipa).find(canid)
+    fnd = loc >= 0
+    if (fnd):
+        msg = "can device '{}' found".format(canid)
+    else:
+        msg = "No can device registered as '{}'".format(canid)
+    test.compare(loc >= 0, True, msg)
+
+    
\ No newline at end of file