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TG588v low-end technicolor router with 6in4 static IP

Shadow Hawkins on Friday, 24 October 2014 21:27:23

I have a horrible but mandatory TG588v from my upstream supplier, with a static IP. It is possible to configure tunnels on it and there is (limited) documentation provided. Using the documentation I have things set up but can't ping6 from either OSX nor FreeBSD 10 client, although they seem to pick up the IPv6 addresses just fine, to my untrained eye. Maybe somebody notices something obviously incorrect or missing?

$ ifconfig en0
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    options=10b<RXCSUM,TXCSUM,VLAN_HWTAGGING,AV>
    ether a8:20:66:52:0c:f8
    inet6 fe80::aa20:66ff:fe52:cf8%en0 prefixlen 64 scopeid 0x4
    inet 10.0.0.2 netmask 0xffffff00 broadcast 10.0.0.255
    inet6 2001:1620:f00:287:aa20:66ff:fe52:cf8 prefixlen 64 autoconf
    inet6 2001:1620:f00:287:b521:aeb4:25b6:59ce prefixlen 64 autoconf temporary
    nd6 options=1<PERFORMNUD>
    media: autoselect (100baseTX <full-duplex,flow-control>)
    status: active

$ traceroute6 ipv6.google.com                                                                                                             
traceroute6 to ipv6.l.google.com (2a00:1450:4001:80a::100e) from 2001:1620:f00:287:b521:aeb4:25b6:59ce, 64 hops max, 12 byte packets
 1  gw-648.zrh-02.ch.sixxs.net  0.745 ms  0.600 ms  0.539 ms
^C
$ ping6 ipv6.google.com                                                                                                                   
PING6(56=40+8+8 bytes) 2001:1620:f00:287:b521:aeb4:25b6:59ce --> 2a00:1450:4001:80a::100e
^C
--- ipv6.l.google.com ping6 statistics ---
4 packets transmitted, 0 packets received, 100.0% packet loss

$ netstat -rn
Routing tables

Internet:
Destination        Gateway            Flags        Refs      Use   Netif Expire
default            10.0.0.138         UGSc           45        0     en0
10/24              link#4             UCS             3        0     en0
10.0.0.2/32        link#4             UCS             0        0     en0
10.0.0.4           ec:35:86:10:b4:b0  UHLWI           0        0     en0    431
10.0.0.6           74:e1:b6:b9:e2:ad  UHLWI           0        0     en0   1175
10.0.0.7           0:c:29:85:5d:60    UHLWI           0        0     en0    709
10.0.0.138/32      link#4             UCS             1        0     en0
10.0.0.138         9c:97:26:8c:f2:34  UHLWIir        46     1171     en0    733
127                127.0.0.1          UCS             0        0     lo0
127.0.0.1          127.0.0.1          UH              3       30     lo0
169.254            link#4             UCS             0        0     en0
172.16.143/24      link#12            UC              1        0  vmnet1
172.16.213/24      link#13            UC              1        0  vmnet8

Internet6:
Destination                             Gateway                         Flags         Netif Expire
default                                 fe80::9e97:26ff:fe8c:f234%en0   UGc             en0
::1                                     ::1                             UHL             lo0
2001:1620:f00:287::/64                  link#4                          UC              en0
2001:1620:f00:287::1                    2001:1620:f00:287::2            UHLr           gif0
2001:1620:f00:287::1                    9c:97:26:8c:f2:34               UHLI            en0
2001:1620:f00:287::2                    link#2                          UHL             lo0
2001:1620:f00:287:aa20:66ff:fe52:cf8    a8:20:66:52:c:f8                UHL             lo0
2001:1620:f00:287:b521:aeb4:25b6:59ce   a8:20:66:52:c:f8                UHL             lo0
fe80::%lo0/64                           fe80::1%lo0                     UcI             lo0
fe80::1%lo0                             link#1                          UHLI            lo0
fe80::%gif0/64                          link#2                          UCI            gif0
fe80::aa20:66ff:fe52:cf8%gif0           link#2                          UHLI            lo0
fe80::%en0/64                           link#4                          UCI             en0
fe80::9e97:26ff:fe8c:f234%en0           9c:97:26:8c:f2:34               UHLWIir         en0
fe80::aa20:66ff:fe52:cf8%en0            a8:20:66:52:c:f8                UHLI            lo0
ff01::%lo0/32                           ::1                             UmCI            lo0
ff01::%gif0/32                          link#2                          UmCI           gif0
ff01::%en0/32                           link#4                          UmCI            en0
ff02::%lo0/32                           ::1                             UmCI            lo0
ff02::%gif0/32                          link#2                          UmCI           gif0
ff02::%en0/32                           link#4                          UmCI            en0

full details here so I can remove any private info later. As my tunnel has never worked, I'm also very negative in balance, could that be the remaining issue? FWIW the doc I used is Appendix F '6in4'

TG588v low-end technicolor router with 6in4 static IP

Jeroen Massar SixXS Staff

on Friday, 24 October 2014 22:13:55

but can't ping6 from either OSX nor FreeBSD 10 client,

You can't ping which address from which address?

inet6 2001:1620:f00:287:aa20:66ff:fe52:cf8 prefixlen 64 autoconf

You are likely missing an '8' there. 2001:1620:f00:0287::/64 = tunnel 2001:1620:f00:8287::/64 = subnet behind the tunnel.

$ traceroute6 ipv6.google.com

traceroute6 to ipv6.l.google.com (2a00:1450:4001:80a::100e) from 2001:1620:f00:287:b521:aeb4:25b6:59ce, 64 hops max, 12 byte packets

1 gw-648.zrh-02.ch.sixxs.net 0.745 ms 0.600 ms 0.539 ms

gw-* should be the PoP. It seems you assigned the PoP IP to your host, which is why your latency is so low... Hence, that is your Technicolor box, not the PoP. Fix the subnet above and you will be swell with this part.

TG588v low-end technicolor router with 6in4 static IP

Shadow Hawkins on Friday, 24 October 2014 22:52:21

Jeroen Massar wrote:

> but can't ping6 from either OSX nor FreeBSD 10 client, You can't ping which address from which address?

inet6 2001:1620:f00:287:aa20:66ff:fe52:cf8 prefixlen 64 autoconf

You are likely missing an '8' there. 2001:1620:f00:0287::/64 = tunnel 2001:1620:f00:8287::/64 = subnet behind the tunnel.

$ traceroute6 ipv6.google.com

traceroute6 to ipv6.l.google.com (2a00:1450:4001:80a::100e) from 2001:1620:f00:287:b521:aeb4:25b6:59ce, 64 hops max, 12 byte packets

1 gw-648.zrh-02.ch.sixxs.net 0.745 ms 0.600 ms 0.539 ms

Thanks for the answer Jereon! I took the subnet from here: IPv6 Prefix2001:1620:f00:287::1/64 PoP IPv62001:1620:f00:287::1 Your IPv62001:1620:f00:287::2 But I see where you get the 8287 from below. And now.... drum roll: ping6 ipv6.google.com PING6(56=40+8+8 bytes) 2001:1620:f00:8287:1838:3954:28e7:a3c5 --> 2a00:1450:4001:80d::1008 16 bytes from 2a00:1450:4001:80d::1008, icmp_seq=0 hlim=56 time=47.813 ms 16 bytes from 2a00:1450:4001:80d::1008, icmp_seq=1 hlim=56 time=46.100 ms O.M.G. Thank-you very much! I now have a list of steps how to set this up, is this of interest for the wiki? The TG588v routers are very common, although direct access to the config is... not common. The only remaining issue I have is that I don't seem to enable ping on the external interface for the router, but that's not an issue for here.

TG588v low-end technicolor router with 6in4 static IP

Jeroen Massar SixXS Staff

on Friday, 24 October 2014 22:55:40

Thank-you very much!

No prob. [..]

is this of interest for the wiki?

Of course, every bit can be useful to somebody else.

The only remaining issue I have is that I don't seem to enable ping on the external interface for the router, but that's not an issue for here.

As you have a static tunnel, do make sure that the PoP (2001:1620:f00:287::1) can ping6 you (2001:1620:f00:287::2) otherwise it will complain that your tunnel is not online. You can check this in the live status btw.

TG588v low-end technicolor router with 6in4 static IP

Shadow Hawkins on Saturday, 25 October 2014 22:38:18

As promised, a how to guide for this 6in4 setup

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