[Pkg-chromium-maint] Bug#817783: chromium: IPv6 broken?

[clayton]

Package: chromium
Version: 49.0.2623.75-2
Severity: normal

I am using miredo to provide basic IPv6 connectivity on my desktop for testing,
it is point-and-shoot: just install it and turn on the daemon. Then:

ping6 ipv6.google.com works fine.

Firefox and w3m work fine on http://v6.testmyipv6.com/

But if I direct chromium to the same link, I get:

This site can’t be reached
v6.testmyipv6.com’s server DNS address could not be found.
DNS_PROBE_FINISHED_BAD_CONFIG

even if I start this way: chromium --enable-ipv6

However, dig works fine on the same machine:

$ dig v6.testmyipv6.com aaaa
;; ANSWER SECTION:
v6.testmyipv6.com.	1186	IN	AAAA	2001:4830:2502:8001::a00:a

It looks to me like my machine is handling IPv6 alright, but Chromium is not.

-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (990, 'testing'), (700, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.3.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages chromium depends on:
ii  libasound2            1.1.0-1
ii  libatk1.0-0           2.18.0-1
ii  libavcodec-ffmpeg56   7:2.8.6-1+b1
ii  libavformat-ffmpeg56  7:2.8.6-1+b1
ii  libavutil-ffmpeg54    7:2.8.6-1+b1
ii  libc6                 2.21-9
ii  libcairo2             1.14.6-1
ii  libcups2              2.1.3-3
ii  libdbus-1-3           1.10.6-1
ii  libexpat1             2.1.0-7
ii  libfontconfig1        2.11.0-6.3
ii  libfreetype6          2.6.3-3
ii  libgcc1               1:5.3.1-10
ii  libgdk-pixbuf2.0-0    2.32.3-1.2
ii  libglib2.0-0          2.46.2-3
ii  libgnome-keyring0     3.12.0-1+b1
ii  libgtk2.0-0           2.24.29-1
ii  libjpeg62-turbo       1:1.4.2-2
ii  libnspr4              2:4.11-1
ii  libnss3               2:3.21-1.1
ii  libpango-1.0-0        1.38.1-1
ii  libpangocairo-1.0-0   1.38.1-1
ii  libpci3               1:3.3.1-1.1
ii  libspeechd2           0.8-7
ii  libsrtp0              1.4.5~20130609~dfsg-1.1
ii  libstdc++6            5.3.1-10
ii  libx11-6              2:1.6.3-1
ii  libxcomposite1        1:0.4.4-1
ii  libxcursor1           1:1.1.14-1+b1
ii  libxdamage1           1:1.1.4-2+b1
ii  libxext6              2:1.3.3-1
ii  libxfixes3            1:5.0.1-2+b2
ii  libxi6                2:1.7.6-1
ii  libxml2               2.9.3+dfsg1-1
ii  libxrandr2            2:1.5.0-1
ii  libxrender1           1:0.9.9-2
ii  libxslt1.1            1.1.28-2.1
ii  libxss1               1:1.2.2-1
ii  libxtst6              2:1.2.2-1+b1
ii  x11-utils             7.7+3
ii  xdg-utils             1.1.1-1

Versions of packages chromium recommends:
ii  fonts-liberation  1.07.4-1

Versions of packages chromium suggests:
pn  chromium-l10n  <none>

-- no debconf information