FreeBSD ipv6 rc.conf settings issue
Gary Kline
kline at thought.org
Sun Jan 10 21:45:25 UTC 2010
On Sat, Jan 09, 2010 at 10:56:31AM +0000, Matthew Seaman wrote:
> Gary Kline wrote:
>
>
> >This caught my interest this morning so I set up a commented-out trial in
> >/etc/rc.d for my ipv6 entry; the one I had in my database /etc/namedb/*
> >files
> >blew my connection sky-high recently.
> >
> >Does this seem plausible:
> >
> >
> >#
> >## ipv6 config
> >#
> >
> ># ipv6_enable="YES"
> ># ipv6_defaultrouter="2002:d1b4:d5d2::"
> ># ipv6_default_interface="em0"
> ># ipv6_gateway_enable="YES"
> >
> >given that my Adress record is 209.180.213.210 ?
> >
> >tia, gents,
>
> So you're using 6to4 tunnelling as described in stf(4)? That's a quite
> different setup to what has been discussed previously in this thread.
> I think 6to4 is, if not deprecated, certainly not the normal way of getting
> IPv6 connectivity nowadays. Generally you'ld get an address space
> allocation
> from your ISP, or failing that, a tunnel broker like Hurricane Electric[*].
>
> Anyhow, as stf(4) says, you need to encode your IPv4 address as hex in the
> 6to4 address -- that looks correct:
>
> % perl -e 'map { printf "%x\n", $_ } split( /\./, shift );' 209.180.213.210
> d1
> b4
> d5
> d2
>
> However 2002:d1b4:d5d2:: is *your* network address, and having it as the
> default router sounds wrong to me. You need to assign addresses from that
> range to your hosts -- which you can do automatically by enabling rtadvd(8)
> on your gateway machine and rtsold(8) on your clients. Also, to use 6to4
> you need to create a 'stf0' interface and make that the
> ipv6_default_interface.
Errp! Matthew, you lost me entirely. I *do* want to use IPv6
eventually. I have it sent up, latenly, in my mail and DNS files.
I do understand the need to go to v6 in a few years, but it is
probably going to take me that long to get mi mind around the
workings of the whole set of issues. [[I'm learning new+exciting
things about pfSEnse and networking-in-detail while getting X11
running on my new server....]] Are there any IPv6-for-Dummies
around? The man pages are things you read for reference; or at
least that's been my experience!
>
> This is all independent of setting up IPv6 related items in your DNS. Get
> the IPv6 connectivity working first -- use ping6 and traceroute6 with IPv6
> numbers to confirm connectivity, and then worry about DNS settings.
>
I'll google around for some insights of things-v6; but you may know
what's best.
thanks,
gary
> Cheers,
>
> Matthew
>
> [*] Which is pretty crazy given that the prediction is IPv4 space is
> going to run out around 2012[+]. All of the major ISPs and NSPs really
> should be providing IPv6 natively by now.
>
> [+] Potential for another IT-feeding-frenzy-panic scenario like the run
> up to Y2K. Make sure IPv6 is on your CV...
>
> --
> Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
> Flat 3
> PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
> Kent, CT11 9PW
>
--
Gary Kline kline at thought.org http://www.thought.org Public Service Unix
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