What do you get for:

<?= php_uname('n');

I get: string 'MYLAPTOP' (length=8)

(In [5093]) refs #2622

After svn up, still failing with:

Fail: Test_Piwik_IP -> test_getHostByAddr -> ::1 -> ip6-localhost at line 582

What do you get for Piwik_IP::getHostByAddr('::1') ?

Alternately, we could simply disable this test on Windows.

I get an empty string for Piwik_IP::getHostByAddr('::1')

Is it OK to disable the test you think?

(In [5119]) fixes #2622

(In [5120]) refs #2622 - strtolower converts it to an empty string

Sorry it is still failing on my config:
Fail: Test_Piwik_IP -> test_getHostByAddr -> ::1 -> ip6-localhost at line 582

(In [5126]) fixes #2622

In 97de0ab: Build was failing again. Result of getHostByAddr
depends on /etc/hosts. On most systems ::1 will resolve
to ipv6-localhost, but for Travis it resolves to localhost.

refs #2622

The following lines are desirable for IPv6 capable hosts

::1 localhost ip6-localhost ip6-loopback