tor/changes/ticket33796
David Goulet 66d5292ee6 Revert "config: Make clients tell dual-stack exits they prefer IPv6"
This reverts commit bf2a399fc0.

Don't set by default the prefer IPv6 feature on client ports because it breaks
the torsocks use case. The SOCKS resolve command is lacking a mechanism to ask
for a specific address family (v4 or v6) thus prioritizing IPv6 when an IPv4
address is asked on the resolve SOCKS interface resulting in a failure.

Tor Browser explicitly set PreferIPv6 so this should not affect the majority
of our users.

Closes #33796

Signed-off-by: David Goulet <dgoulet@torproject.org>
2020-07-07 12:58:41 -04:00

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o Removed features (IPv6, revert):
- Revert the client port prefer IPv6 feature because it breaks the
torsocks use case. The SOCKS resolve command is lacking a mechanism to
ask for a specific address family (v4 or v6) thus prioritizing IPv6 when
an IPv4 address is asked on the resolve SOCKS interface resulting in a
failure. Tor Browser explicitly set PreferIPv6 so this should not affect
the majority of our users. Closes ticket 33796; bugfix on 0.4.4.1-alpha.