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Re: [BackupPC-users] IPv6 support
2011-03-17 09:48:52
Tod Detre <tod.detre AT maine DOT edu> wrote on 03/16/2011
04:41:05 PM:
> > I'd have to look at the rest of the code, but if gethostbyname
> fails, and if you remove the nmb stuff, you're left with a hostname.
> The question is, does the rest of the code work with a host
name
> string rather than an IP address?
>
> It did when I tried it, but it was on my home network with 2-3
> machines and I did not do a lot of testing.
Interesting. If that's the case, it would seem
that rather than exit when the NMB lookup fails, it should simply log the
issue (possibly strongly) and continue.
FWICT, Perl does not give you a way to use getipaddrbyname
unless you are using IPv6-specific modules. (The same is true for
every *other* aspect of IPv6 with Perl, including sockets.) However,
if passing hostnames through to the proper daemons does work, why not take
advantage of it?
Craig, do you know of any issues that might come from
simply removing the exit() on line 506 (and maybe adding some logging between
507-508)? If it blows up later, it's at least potentially farther
than it was if we simply exit.
The only downside to this is if the server is both
IPv4 and IPv6 enabled, the system will default to IPv4 first: the
code will do an IPv4-only lookup first, and if it works, it'll use the
IPv4 address it gets. I don't see that as a major issue.
Also, I hope that native IPv6 support is a design
requirement for BackupPC 4.0? :)
Timothy J. Massey
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