Enable IPv6 in Travis

diff --git a/.travis.yml b/.travis.yml
index 9fde29b02ae8074ddf72608d5d6efdefc183ac1a..5a6d31ed4bbcf21c1d37a95e602c2562eed1113c 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,7 @@ compiler:
   - clang
 before_script:
  - git describe --always --dirty=+
+ - sudo sysctl net.ipv6.conf.lo.disable_ipv6=0
  - sudo /sbin/ip addr add 10.0.3.0/24 dev lo
  - sudo /sbin/ip addr add 1.2.3.4/32 dev lo
  - sudo rm /etc/apt/sources.list.d/travis_ci_zeromq3-source.list