Bug 213898 - net/mDNSResponder unconditionally enables IPV6
Summary: net/mDNSResponder unconditionally enables IPV6
Status: Closed FIXED
Alias: None
Product: Ports & Packages
Classification: Unclassified
Component: Individual Port(s) (show other bugs)
Version: Latest
Hardware: Any Any
: --- Affects Only Me
Assignee: Po-Chuan Hsieh
Depends on:
Reported: 2016-10-29 20:05 UTC by Mikhail Teterin
Modified: 2016-11-19 09:15 UTC (History)
0 users

See Also:
bugzilla: maintainer-feedback? (sunpoet)

Turn off HAVE_IPV6, if WITHOUT contains "IPV6" (647 bytes, patch)
2016-10-29 20:05 UTC, Mikhail Teterin
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Description Mikhail Teterin freebsd_committer 2016-10-29 20:05:22 UTC
Created attachment 176292 [details]
Turn off HAVE_IPV6, if WITHOUT contains "IPV6"

The port goes through some effort to enable IPV6 functionality. Unfortunately, it does so unconditionally -- even where the OS and the kernel are built without it. On such systems the resulting daemons refuse to even start:

% /usr/local/bin/mDNSResponderPosix ....
socket AF_INET6: Address family not supported by protocol family

The enclosed patch examines the local machine's WITHOUT-setting and turns off the HAVE_IPV6 flag, if IPV6 is disabled.

Rebuilt thus, the daemon can start on my machines here.

The proper fix would've been for the upstream to stop treating the run-time absence of AF_INET6-support as fatal. But that may be too much for the port to fix...
Comment 1 Po-Chuan Hsieh freebsd_committer 2016-10-31 12:06:03 UTC
I understand what you mean but this patch is incorrect. We do not have WITHOUT variable. I'll make a new one.
Comment 2 Mikhail Teterin freebsd_committer 2016-10-31 17:01:09 UTC
(In reply to Sunpoet Po-Chuan Hsieh from comment #1)
> We do not have WITHOUT variable.

A number of ports have the IPV6-option (www/lynx is one example). I set it (and some others) system-wide in /etc/make.conf:


this helps me avoid the options-dialog in some ports completely.

I suppose, this particular option's default setting can depend on whether or not the base's WITHOUT_INET6 is set (to "yes"). That is, if you choose to make this port interactive by explicitly adding the IPV6-option to it. The patch will remain the same, though :-)
Comment 3 commit-hook freebsd_committer 2016-11-19 08:03:28 UTC
A commit references this bug:

Author: sunpoet
Date: Sat Nov 19 08:03:00 UTC 2016
New revision: 426352
URL: https://svnweb.freebsd.org/changeset/ports/426352

  - Add IPV6 option

  PR:		213898
  Reported by:	mi