Travis script: refactor env section

diff --git a/.travis.yml b/.travis.yml
index 1adf3b2e315220583674c29e35c8d6c895230293..40d0d1a60f9b7cca881387606f59f4d32a5b350e 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,8 +5,11 @@ compiler:
   - clang
 
 env:
-  - BUILD_LIBPCAP=true BUILD_IPV6=true
-  - BUILD_LIBPCAP=true BUILD_IPV6=false
+  global:
+    - BUILD_LIBPCAP=true
+  matrix:
+    - BUILD_IPV6=true
+    - BUILD_IPV6=false
 
 before_script:
   - sudo apt-get install libssl-dev libssl0.9.8 libssl1.0.0