Date: Wed, 29 Aug 2001 21:55:56 +0200 (CEST) From: Wouter Van Hemel <wvhemel@vub.ac.be> To: Hajimu UMEMOTO <ume@mahoroba.org> Cc: <freebsd-questions@FreeBSD.ORG> Subject: Re: ipv6 route configuration Message-ID: <Pine.LNX.4.33.0108292142010.136-100000@cocaine.cryolabs.net> In-Reply-To: <20010830.034358.39231250.ume@mahoroba.org>
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On Thu, 30 Aug 2001, Hajimu UMEMOTO wrote:
> Hi,
>
> # I'm not on -question list.
>
(I'm not on the list either)
> >>>>> On Wed, 29 Aug 2001 17:06:08 +0200 (CEST)
> >>>>> Wouter Van Hemel <wvhemel@vub.ac.be> said:
>
> wvhemel> route add -inet6 3ffe:0b80:01c8:: -prefixlen 48 -interface lo0
> (--> why lo0 ?? shouldn't this subnet be send to ed1, the internal net?)
>
> It should be better to add -reject.
>
For security's sake, you mean? Well, first I want to make it work, if it
doesn't work, there isn't anything to secure, is there :)
> wvhemel> and it makes a rtadvd.conf-file with:
> wvhemel> ##### start #####
> wvhemel> default:\
> wvhemel> :raflags#0:rltime#3600:\
> wvhemel> :pinfoflags#64:vltime#360000:pltime#360000:mtu#1500:
> wvhemel> ether:\
> wvhemel> :mtu#1280:tc=default:
> wvhemel> # interfaces.
> wvhemel> ed1:\
> wvhemel> :addrs#1:\
> wvhemel> :addr="3ffe:0b80:01c8:0001::":prefixlen#64:tc=ether:
> wvhemel> ##### end #####
>
> Actually, you don't need rtadvd.conf.
>
> wvhemel> 1) why does the /48 class get bound to lo0?
>
> It is reject route to avoid loop at aggregate point. Actual segment
> should use /64.
>
So I can't assign a /48 straight to my internal network?
What's the logic behind that?
What about static routes from
3ffe:b80:1c8::1 --> router
3ffe:b80:1c8::2 --> server1
3ffe:b80:1c8::3 --> server2 ?
> wvhemel> 2) how do I send the full /48 class to the internal net, using ::1 for the
> wvhemel> router itself - like my ipv4 internal net?
>
> wvhemel> 3) does rtadvd have to run on all machines, or just the router?
>
> Just on the router.
>
Ok, that seems logical.
> wvhemel> Anybody with a better understanding of routing, please enlighten me, or
> wvhemel> point me to good resources... thanks :)
>
> Basically, if you use /etc/rc.conf, you can set something like:
>
> gif_interfaces="gif0"
> gifconfig_gif0="real_ip tunnel_end_point"
> ipv6_enable="YES"
> ipv6_network_interfaces="ed1"
> ipv6_prefix_ed1="3ffe:b80:1c8:1"
> ipv6_gateway_enable="YES"
> ipv6_router_enable="YES"
> ipv6_router_flags="-A 3ffe:b80:1c8::/48,gif0 -O 3ffe:b80:1c8::/48,gif0"
> rtadvd_enable="YES"
> rtadvd_interfaces="ed1"
>
This is what the script does, first I want to make everything work before
I put it in my rc-files.
How would you go about if you would make a static route for each host?
That would be possible, no?
Allow me to explain what I want (if possible) and don't know how to
achieve. I'd like to make the ip as short as possible, and appoint
3ffe:b80:1c8::1 to 192.168.196.1, 3ffe:b80:1c8::2 to 192.168.196.2, and so
on.
Just to make sure, for the other machines, I just add something like
'3ffe:b80:1c8::2' to ed1 with ifconfig?
> --
> Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan
> ume@mahoroba.org ume@bisd.hitachi.co.jp ume@{,jp.}FreeBSD.org
> http://www.imasy.org/~ume/
>
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