IPv6 tunnel problem

[Marcin Cieslak]

>> Mattia Rossi <mrossi at swin.edu.au> wrote:
> I have accept_rtadv enabled if it's not a router. See my post.

I think I have a similar setup (only using sixxs-aiccu). Since 
my machine is a gateway to the outside IPv6 world (via www.sixxs.net)
I am not accepting router adverisements there, but I'm running
rtadvd and sending them to other hosts on the LAN:

	nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>

> ifconfig with tunnel up is:
>
> ifconfig
> bge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>  
> options=8009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LINKSTATE>
>          ether 00:0d:9d:51:d4:7e
>          inet 136.186.229.112 netmask 0xffffff00 broadcast xxx.xxx.xxx.xxx
>          inet6 fe80::xxxx:xxxx:xxxx:xxxx%bge0 prefixlen 64 scopeid 0x5
>          inet6 xxxx:xxxx:xxxx:xxxx::xxxx prefixlen 64 duplicated
                                                        **********
                                                     what's up here?
>          nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
>          media: Ethernet autoselect (1000baseT <full-duplex>)
>          status: active

Why is this address "duplicated"? If this machine *is* the gateway
to the outside IPv6 world, should *not* it be accepting rtadv
and have a global IPv6 address configured statically


> tun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1280
>          options=80000<LINKSTATE>
>          inet6 fe80::xxxx:xxxx:xxxx:xxxx%tun0 prefixlen 64 scopeid 0x9
>          inet6 xxxx:xxxx:xxxx::xxxx --> xxxx:xxxx:xxxx::xxxx prefixlen 128
>          nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
                                     **********
                                     Does "ifconfig tun0 inet6 -ifdisabled" help?

I don't know why gateway6 (I don't use this software) leaves it as "IFDISABLED"

This is /etc/rc.conf from my tunnel gateway machine (two tunnels, tun0 and
tun1) - it runs a few-month-old -CURRENT:

ipv6_gateway_enable="YES"
rtadvd_enable="YES"
# Internal WLAN
rtadvd_interfaces="wlan0"
ifconfig_wlan0_ipv6="inet6 aaaaa:bbbb:cccc::1/64"
# Tunnel via tun0 is configured automatically by aiccu
# and has NO /etc/rc.conf entry at all
# Tunnel via tun1 is configured statically (it serves only some networks)
ifconfig_tun1_ipv6="inet6 aaaaa:bbbb:cccc:8000::1"  

//Marcin