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IPv6 Routing Issue
![[us]](/s/countries/us.gif) Shadow Hawkins on Monday, 01 October 2007 03:50:32
Hello,
I am attempting to setup an IPv6 router in my network, right now I have the following on my OpenBSD gateway:
tun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1280
groups: tun
inet6 fe80::200:24ff:fec9:e104%tun0 -> prefixlen 64 scopeid 0x8
inet6 fe80::4830:1200:8b:2%tun0 -> prefixlen 64 scopeid 0x8
inet6 2001:4830:1200:8b::2 -> 2001:4830:1200:8b::1 prefixlen 128
vr1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
lladdr 00:00:24:c8:e1:05
media: Ethernet autoselect (100baseTX full-duplex)
status: active
inet 10.0.1.1 netmask 0xffffff00 broadcast 10.0.1.255
inet6 2001:4830:1200:8b:3 prefixlen 64
net.inet6.ip6.forwarding=1
IPv6 is working on the gateway:
PING6(56=40+8+8 bytes) 2001:4830:1200:8b::2 --> 2001:200:0:8002:203:47ff:fea5:3085
16 bytes from 2001:200:0:8002:203:47ff:fea5:3085, icmp_seq=0 hlim=48 dst=2001:4830:1200:8b::2%8 time=314.638 ms
rtadvd is setup on here and successfully distributing addresses to the clients.
bge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=1b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING>
inet6 fe80::2e0:81ff:fe41:940%bge0 prefixlen 64 scopeid 0x1
<bunch of ipv4 aliases>
inet6 2001:4830:1200:8b:2e0:81ff:fe41:940 prefixlen 64 autoconf
However, attempts to ping out are unsuccessful:
[root@cube]# ping6 2001:4830:1200:8b::1
PING6(56=40+8+8 bytes) 2001:4830:1200:8b:2e0:81ff:fe41:940 --> 2001:4830:1200:8b::1
^C
--- 2001:4830:1200:8b::1 ping6 statistics ---
17 packets transmitted, 0 packets received, 100.0% packet loss
the routing table on this box seem proper:
Internet6:
Destination Gateway Flags Netif Expire
default 2001:4830:1200:8b::3 UGS bge0
ping6 -v provides some more information:
PING6(56=40+8+8 bytes) 2001:4830:1200:8b:2e0:81ff:fe41:940 --> 2001:4830:1200:8b::1
24 bytes from 2001:4830:1200:8b::3: Neighbor Advertisement
64 bytes from 2001:4830:1200:8b:2e0:81ff:fe41:940: Destination Host Unreachable
Vr TC Flow Plen Nxt Hlim
6 00 00000 0010 3a 40
2001:4830:1200:8b:2e0:81ff:fe41:940->2001:4830:1200:8b::1
ICMP6: type = 128, code = 0
64 bytes from 2001:4830:1200:8b:2e0:81ff:fe41:940: Destination Host Unreachable
Vr TC Flow Plen Nxt Hlim
6 00 00000 0010 3a 40
2001:4830:1200:8b:2e0:81ff:fe41:940->2001:4830:1200:8b::1
ICMP6: type = 128, code = 0
32 bytes from 2001:4830:1200:8b::3: Neighbor Solicitation
Any ideas what i have done wrong?
IPv6 Routing Issue
![[nl]](/s/countries/nl.gif) Shadow Hawkins on Monday, 01 October 2007 12:21:31
There is a funny one. You take an address from a point-to-point link and stick it to another interface. That will not work at all.
You tunnel is a point-to-point /64 network with just 2 members. And only 2 addresses in use. (::1 for the central site and ::2 for your end of the tunnel.) You can NOT use that network on you LAN!
You need to request a subnet and use that for your local network(s).
Mind you that you need to split the /48 assignment into /64 networks.
IPv6 Routing Issue
Shadow Hawkins on Tuesday, 02 October 2007 01:30:27
Well,
Glad you got a chuckle :)
I sadly seem to have a credit deficit at the moment unfortunately :/
I wonder if there is some cash-for-credits program here?
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