I have a tunnel with tunnelbroker:
root@host1:~# ifconfig he-ipv6
he-ipv6 Link encap:IPv6-en-IPv4
Dirección inet6: fe80::57d8:a072/128 Alcance:Enlace
Dirección inet6: 2001:470:1f08:1982::2/64 Alcance:Global
ACTIVO PUNTO A PUNTO FUNCIONANDO NOARP MTU:1472 Métrica:1
Paquetes RX:7960935 errores:0 perdidos:0 overruns:0 frame:0
Paquetes TX:4860665 errores:560 perdidos:0 overruns:0 carrier:0
colisiones:0 long.colaTX:0
Bytes RX:10731494241 (10.7 GB) TX bytes:503205290 (503.2 MB)
From this machine (the gateway of my network), I can ping to other sites like ipv6.google.com or 2001:470:1f08:1982::1
root@host1:~# ping6 -c4 2001:470:1f08:1982::1
PING 2001:470:1f08:1982::1(2001:470:1f08:1982::1) 56 data bytes
64 bytes from 2001:470:1f08:1982::1: icmp_seq=1 ttl=64 time=44.5 ms
64 bytes from 2001:470:1f08:1982::1: icmp_seq=2 ttl=64 time=44.8 ms
64 bytes from 2001:470:1f08:1982::1: icmp_seq=3 ttl=64 time=44.2 ms
64 bytes from 2001:470:1f08:1982::1: icmp_seq=4 ttl=64 time=44.4 ms
--- 2001:470:1f08:1982::1 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3005ms
rtt min/avg/max/mdev = 44.238/44.519/44.807/0.203 ms
root@host1:~# mtr 2001:470:1f08:1982::1
My traceroute [v0.80]
host1 (::) Thu Jun 23 03:02:09 2011
Keys: Help Display mode Restart statistics Order of fields quit
Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev
1. 2001:470:1f08:1982::1 0.0% 13 44.7 44.3 43.9 44.8 0.4
root@host1:~# ping6 -c4 ipv6.google.com
PING ipv6.google.com(bru01m01-in-x68.1e100.net) 56 data bytes
64 bytes from bru01m01-in-x68.1e100.net: icmp_seq=1 ttl=56 time=51.1 ms
64 bytes from bru01m01-in-x68.1e100.net: icmp_seq=2 ttl=56 time=50.8 ms
64 bytes from bru01m01-in-x68.1e100.net: icmp_seq=3 ttl=56 time=51.0 ms
64 bytes from bru01m01-in-x68.1e100.net: icmp_seq=4 ttl=56 time=50.7 ms
--- ipv6.google.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3005ms
rtt min/avg/max/mdev = 50.786/50.965/51.186/0.321 ms
root@host1:~# mtr ipv6.google.com
My traceroute [v0.80]
host1 (::) Thu Jun 23 03:04:39 2011
Keys: Help Display mode Restart statistics Order of fields quit
Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev
1. 2001:470:1f08:1982::1 0.0% 6 53.1 53.5 53.1 54.5 0.5
2. gige-g4-6.core1.lon1.he.net 0.0% 6 50.6 48.6 44.8 56.4 4.3
3. 2001:7f8:4::3b41:1 0.0% 6 44.4 44.8 44.4 45.2 0.3
4. 2001:4860::1:0:6 0.0% 6 45.2 47.7 45.2 52.8 3.8
5. 2001:4860::8:0:2ddf 0.0% 6 45.3 49.4 44.7 69.8 10.0
6. 2001:4860::8:0:2ac4 0.0% 6 50.8 50.8 50.4 51.0 0.2
7. 2001:4860::2:0:87b 0.0% 5 50.7 51.9 50.7 55.7 2.1
8. 2001:4860:0:1::22f 0.0% 5 55.7 54.5 51.1 57.0 2.2
9. bru01m01-in-x68.1e100.net 0.0% 5 53.4 51.5 50.9 53.4 1.1
But I have other connection at another ISP (ADSL with IPv4toIPv6):
host2# ifconfig wlan0
wlan0 Link encap:Ethernet direcciónHW 00:21:6a:bf:b5:c2
Direc. inet:10.123.123.50 Difus.:10.123.123.255 Másc:255.255.255.0
Dirección inet6: 2002:57df:baa8:0:221:6aff:febf:b5c2/64 Alcance:Global
Dirección inet6: fe80::221:6aff:febf:b5c2/64 Alcance:Enlace
ACTIVO DIFUSIÓN FUNCIONANDO MULTICAST MTU:1500 Métrica:1
Paquetes RX:202052 errores:0 perdidos:0 overruns:0 frame:0
Paquetes TX:134223 errores:0 perdidos:0 overruns:0 carrier:0
colisiones:0 long.colaTX:1000
Bytes RX:206282242 (206.2 MB) TX bytes:21270114 (21.2 MB)
host2 # ping6 -c4 ipv6.google.com
PING ipv6.google.com(fra07s07-in-x6a.1e100.net) 56 data bytes
64 bytes from fra07s07-in-x6a.1e100.net: icmp_seq=1 ttl=58 time=124 ms
64 bytes from fra07s07-in-x6a.1e100.net: icmp_seq=2 ttl=58 time=96.6 ms
64 bytes from fra07s07-in-x6a.1e100.net: icmp_seq=3 ttl=58 time=94.0 ms
64 bytes from fra07s07-in-x6a.1e100.net: icmp_seq=4 ttl=58 time=107 ms
--- ipv6.google.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3004ms
rtt min/avg/max/mdev = 94.013/105.656/124.532/12.012 ms
When I try make connections between these machines, I can't because tunnelbroker doesn't know the route to return the packets:
From host2 to host1(tunnelbroker), I try to ping:
host2# ping6 2001:470:1f08:1982::2
PING 2001:470:1f08:1982::2(2001:470:1f08:1982::2) 56 data bytes
(no replys)
But at the other side:
# tcpdump -nt -i he-ipv6
tcpdump: WARNING: he-ipv6: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on he-ipv6, link-type RAW (Raw IP), capture size 65535 bytes
IP6 2002:57df:baa8:0:221:6aff:febf:b5c2 > 2001:470:1f08:1982::2: ICMP6, echo request, seq 55, length 64
IP6 2001:470:1f08:1982::2 > 2002:57df:baa8:0:221:6aff:febf:b5c2: ICMP6, echo reply, seq 55, length 64
IP6 2002:57df:baa8:0:221:6aff:febf:b5c2 > 2001:470:1f08:1982::2: ICMP6, echo request, seq 56, length 64
IP6 2001:470:1f08:1982::2 > 2002:57df:baa8:0:221:6aff:febf:b5c2: ICMP6, echo reply, seq 56, length 64
IP6 2002:57df:baa8:0:221:6aff:febf:b5c2 > 2001:470:1f08:1982::2: ICMP6, echo request, seq 57, length 64
IP6 2001:470:1f08:1982::2 > 2002:57df:baa8:0:221:6aff:febf:b5c2: ICMP6, echo reply, seq 57, length 64
So I checks the traceroutes:
From host2 to host1:
host2# mtr 2001:470:1f08:1982::2
My traceroute [v0.75]
host2 (::) Thu Jun 23 03:11:41 2011
Keys: Help Display mode Restart statistics Order of fields quit
Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev
1. ???
2. 2002:d5c5:1e57::1 0.0% 6 78.3 77.7 74.8 78.9 1.4
3. ge-1-3-0-2.brd.ipv6.concepts-ict.net 0.0% 6 73.8 76.5 73.8 82.8 3.8
4. gi2-11.nikhef.ipv6.concepts-ict.net 0.0% 6 79.8 79.6 77.9 81.4 1.4
5. 20gigabitethernet1-3.core1.ams1.ipv6.he.n 0.0% 6 77.8 75.2 70.9 81.3 4.0
6. 10gigabitethernet1-4.core1.lon1.he.net 0.0% 6 70.9 74.4 69.6 85.8 6.6
7. ???
From host1 to host2:
root@host1:~# mtr 2002:57df:baa8:0:221:6aff:febf:b5c2
My traceroute [v0.80]
host1 (::) Thu Jun 23 03:13:08 2011
Keys: Help Display mode Restart statistics Order of fields quit
Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev
1. 2001:470:1f08:1982::1 0.0% 5 68.6 68.5 68.3 68.6 0.1
2. ???
So, it seems a problem with the other side of the IPv6 over IPV4 tunnel (tunnelbroker).
I didn't have a firewall at any machines... and with tcpdump at host2, I never view packets form host1.
Anybody can help me?
Thank you very much.
PS: If I check the same with the /64 and /48 networks that I have assigned, it happens the same.
PS2: Sorry but my poor English.
If I read you post correctly, it's a problem on the 6to4 side
I can ping your side of the tunnel, but I can't ping your 6to4 host.
I think i remember seeing a post on the HE forums not too long ago about someone else having a problem accessing a 6to4 network too