Hi,
On Mon, 14 Mar 2011, Josh Fisher wrote:
> On 3/12/2011 5:15 AM, Gavin McCullagh wrote:
> > On Fri, 11 Mar 2011, Joseph L. Casale wrote:
> >
> >>> The bacula-fd daemon (according to netstat -na) doesn't appear to be
> >>> listening on the IPv6 address.
> >> Force it to listen on whatever address/port you desire w/ "FDAddresses = "
> >>
> >> http://www.bacula.org/5.0.x-manuals/en/main/main/Client_File_daemon_Configur.html
> > Thanks for the reply. Is this considered a bug? Admittedly not so many
> > networks use IPv6 yet so I can imagine it might not be very high priority.
>
> It seems you have a host name that resolves to both an IPv4 address and
> an IPv6 address, no? So when DNS returns two addresses for that host
> name, which one should be used? Should bacula-fd listen on the first
> address returned, the second address returned, or both?
I would guess both? That's how dual-stacking is generally done so that
IPv6 capable hosts can use the AAAA record but hosts which don't support
IPv6 yet can still connect using the A record.
In the normal way, I haven't tended to specify the name or address for the
FD to listen on. bacula-fd just binds to the available configured
addresses (the v4 ones at any rate). Is that not what people expect?
> FDAddress is retained for backward compatibility. I believe you should
> use FDAddresses for IPv6 and/or multi-homed machines.
Surely defining the address at all is optional, no?
> Try using something like:
> FDAddresses {
> ip = {
> addr = hostname
> }
> }
>
> The ip keyword of FDAddresses allows selection of IPv4 and IPv6 addresses.
>
> An alternative solution that will work with both Bacula, and any other
> software that may not be as configurable as Bacula, is to assign
> different host names for the IPv6 network than are assigned for the IPv4
> network. That removes the ambiguity, although I still think you will
> have to use the FDAddresses directive as opposed to the FDAddress
> directive. The older FDAddress directive may not support IPv6.
I'd been using FDAddresses alright, but would prefer to just have bacula-fd
bind to the available addresses. Is that not a good idea? I guess the
above hostname-based directive isn't too bad.
There is a potential race condition of sorts in that where you use router
advertisements, a host may not immediately pick up its IPv6 address at boot
time so when the bacula-fd service is started, the IPv6 address might not
yet be configured. That said, I restarted bacula-fd with the IPv6 address
configured and bacula-fd still didn't bind to it.
Gavin
--
Gavin McCullagh
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