TomatoUSB

Hello everyone, after a few hours of struggling I finaly managed to get ipv6rd working on 1.28-093 k26 by shibby.

My script is based on the one from the dd-wrt wiki article on IPv6,
and one from a thread here on this forum that i'm unable to find now.

Basicly two scripts to add under administration-> scripts.
First under init you should add

insmod tunnel4
insmod sit

then under WAN up you should add

WANIP=$(nvram get wan_ipaddr)
if [ -n "$WANIP" ]; then
    ip tunnel del tun6rd
    V6PREFIX=$(printf 'abcd:efgh:%02x%02x:%02x%02x' $(echo $WANIP | tr . ' '))
    ip tunnel add tun6rd mode sit local $WANIP ttl 64
    ip addr add ${V6PREFIX}::1/32 dev tun6rd
    ip addr add ${V6PREFIX}::1/64 dev br0
    ip link set tun6rd up
    ip -6 route add ::/0 via ::1.2.3.4 dev tun6rd
    service radvd restart
fi

Where you should change abcd:efgh to your prefix on line 4, and the prefix length is assumed to be /32 on line 6 and on line 9 change 1.2.3.4 to your 6rd BR.

Then under Basic->IPv6, change the service type to Other, and IPv6 WAN interface to:

tun6rd

Then change the Router IPv6 address
You have to convert your public IPv4 ip to hex to use in the ipv6 address
not acually sure if this part is needed as it should be taken care of in the script.

Prefix:Prefix:first part of ipv4 in hex:second part of ipv4 in hex::1

Edit: Dont forget to activate Enable Router Advertisements under Basic -> Ipv6 as unoriginal said. Also changed the prefix to something more general.

Hope it proved somewhat helpful and understandable.

Sushix

Awesome thanks. I just got this working with Charter.

@JTY
I am also with Charter. Can you please provide the info you plugged into the above script? I will like to try this on my tomato router. Thanks.

@mobilone

I am also with Charter, and finally have 6rd working thanks to sushix.

The customized WANUP script for Charter's 6rd is:

WANIP=$(nvram get wan_ipaddr)
if [ -n "$WANIP" ]; then
    ip tunnel del tun6rd
    V6PREFIX=$(printf '2602:100:%02x%02x:%02x%02x' $(echo $WANIP | tr . ' '))
    ip tunnel add tun6rd mode sit local $WANIP ttl 64
    ip addr add ${V6PREFIX}::1/32 dev tun6rd
    ip addr add ${V6PREFIX}::1/64 dev br0
    ip link set tun6rd up
    ip -6 route add ::/0 via ::68.114.165.1 dev tun6rd
    service radvd restart
fi

You must also make sure, in addition to sushix's instructions, that you check "Enable Router Advertisements" in the Basic->IPv6 configuration page, and put in Charter's IPv6 DNS servers, 2607:f428:1::5353:1 and 2607:f428:2::5353:1.

You should not have to check either WAN or LAN for "Accept RA from" and you should not have to change or manually set your router's IPv6 address, which sushix was unsure about.

Charter's 6rd service should give every device its own IPv6 address, based on each device's MAC address. For me Charter's 6rd service is about twice as fast as the 6to4 anycast I was using before, though its still about a third of my IPv4 speed.

I am on Shibby's 093 MiniIPv6 firmware, similar to sushix; perhaps your firmware is slightly different.

@unoriginal
Thanks for providing the info about charter. I could not get it going, but that is ok. Maybe not all charter locations have this turned on.

Finally got this working for CenturyLink and thought I would share:

WANIP=$(nvram get wan_ipaddr)
if [ -n "$WANIP" ]; then
    ip tunnel del tun6rd
    V6PREFIX=$(printf '2602:%02x:%02x%02x:%02x00' $(echo $WANIP | tr . ' '))
    ip tunnel add tun6rd mode sit local $WANIP ttl 64
    ip addr add ${V6PREFIX}::1/24 dev tun6rd
    ip addr add ${V6PREFIX}::1/64 dev br0
    ip link set tun6rd up
    ip -6 route add ::/0 via ::205.171.2.64 dev tun6rd
    service radvd restart
fi

http://repo.or.cz/w/tomato.git/commit/8e926a4634304be54bb6ce01bfbdd457db71bb4e

will be added in my new v100 build.

I was wondering if after 9 months since the last post there is a easier way to use the 6rd in tomato Shibby mod.
In one hand I have the configuration from my ISP, in this case Charter:

6rd Prefix = 2602:100::/32
Border Relay Address = 68.114.165.1
6rd prefix length = 32
IPv4 mask length = 0

Primary DNS Address = 2607:f428:1::5353:1

Secondary DNS Address = 2607:f428:2::5353:1

and in the other one I have the IPv6 configuration page from Shibby (Tomato Firmware 1.28.0000 MIPSR2-108 K26 USB AIO-64K):

IPv6 Service Type [6rd from DHCPv4 (Option 212)]    

Static DNS    [            ]
              [            ]    
              [            ]

Enable Router Advertisements [tick/untick]

It seems to me that Charter is giving me too much information or Shibby is requiring too less.

Any advise? Maybe the DHCPv4 (option 212) is not supported by Charter.

Thanks for all your effort guys,

I investigated a little more, Charter is using a "6rd Border Relay" and according to the RFC 5969 the "6rd from DHCPv4 (Option 212)" is a different animal.

Now the question is what Shibby (see post above) has added in the v100 version, here a list of the IPv6 features in his version change log:

[RELEASE] 105

...

- OpenVPN update to 2.3.0 (ipv6 support)

...

[RELEASE] 101

- IPv6 suppord fixed (sit.ko module depends)

...

- Memory leak fixed (when IPv6 is enabled)

...

[RELEASE] 100

...

- IPv6: Proof-of-Concept 6RD support

...

to me it looks like he did not implemented a "6rd Border Relay" config page but a (well done) "6rd from DHCPv4 (Option 212)" support.