[haiku-bugs] Re: [Haiku] #8293: BNetworkAddress needs to check if there is an available IPv6 connection.
- From: "donn" <trac@xxxxxxxxxxxx>
- Date: Sat, 17 Jan 2015 07:30:39 -0000
#8293: BNetworkAddress needs to check if there is an available IPv6 connection.
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Reporter: kallisti5 | Owner: axeld
Type: bug | Status: new
Priority: high | Milestone: R1
Component: Network & Internet/Stack | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking: 9269, 10033
Has a Patch: 1 | Platform: All
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Comment (by donn):
I'm away for a few more days, so I can't present an empirical
demonstration until then, but that is indeed what was happening - I could
see it in the system call trace, and match it to the timeout in
getaddrinfo().
Your DNS service probably doesn't ignore IPV6 queries. Mine does ("mine"
meaning, Haiku's choice in resolv.conf.) I don't doubt that it's wrong to
do that, there's probably no excuse for ignoring a query like that, but 1)
it happens (or did, years ago when this came up) to me and others (cf.
discussion on developers list at the time.) The fix is harmless - if I
want applications on my host to confine themselves to IPV4, then it isn't
the OS's business to guess that I might be wrong, and in that case it
would be silly to waste time resolving IPv6 addresses.
And of course this fix has already been added to getaddrinfo() etc, a
couple years ago. Is the probem that we're reluctant to incorporate it
into a new and hopefully working Network Prefs? If you can allow Network
Prefs et al. to co-exist peacefully with manual edits to resolv.conf, then
maybe you don't need to worry about it - it can be added to Network Prefs
later if there's call for it, as long as the occasional user who needs it
can manually add it. (Note that I'm not talking about only Network Prefs
per se, wifi DHCP setup also overwrites my resolv.conf, which is another
example of something that needs to be more merge and less overwrite, since
I may have several interfaces and the DHCP-supplied DNS may not be
suitable for the other interfaces, or suitable at all, for that matter.
--
Ticket URL: <https://dev.haiku-os.org/ticket/8293#comment:25>
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