travis: Enable IPv6 on build hosts

Since the move to Google Compute Engine (GCE) IPv6 has been disabled
on the build hosts, causing several tests to fail.  Lets try to get at
least local IPv6 connectivity up again.

diff --git a/.travis.yml b/.travis.yml
index a0dfbb61ae7c9d74c983d7b910209daa8612176a..04838e8a0c905acd3b84e010cf618f2baaf6fe53 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,9 @@ before_install:
   - ./scripts/test.sh deps
   - ./scripts/test.sh pydeps
 
+before_script:
+  - sudo sysctl -w net.ipv6.conf.all.disable_ipv6=0
+
 script:
   - ./scripts/test.sh