Disable vcan tests on Python37

.travis/test.sh

@@ -25,6 +25,12 @@ then
   UT_FLAGS+=" -K FIXME_py3"
 fi
 
+if [[ ${TRAVIS_DIST:=trusty} == xenial ]]
+then
+  # The vcan module is currently unavailable on Travis-CI xenial builds
+  UT_FLAGS+=" -K vcan_socket"
+fi
+
 # Dump Environment (so that we can check PATH, UT_FLAGS, etc.)
 set
 

scapy/contrib/cansocket_native.uts

@@ -1,5 +1,5 @@
 % Regression tests for nativecansocket
-~ python3_only
+~ python3_only vcan_socket
 
 # More information at http://www.secdev.org/projects/UTscapy/
 

scapy/contrib/cansocket_python_can.uts

@@ -1,4 +1,5 @@
 % Regression tests for the CANSocket
+~ vcan_socket
 
 # More information at http://www.secdev.org/projects/UTscapy/
 

scapy/contrib/isotp.uts

@@ -1,4 +1,5 @@
 % ISOTP Tests
+~ vcan_socket
 * Tests for ISOTP