'Upgrading' NAT64 to 464XLAT?

[Tore Anderson]

* Bjørn Mork

> Tore Anderson <tore at fud.no> writes:
> 
>> This is implemented in Android - its wireless hotspot feature works just
>> fine using IPv6-only + 464XLAT as the upstream mobile connectivity. The
>> hotspot zone remains IPv4-only though,
> 
> Really?  I have only tested on Android 4.2 (without the CLAT), but USB
> tethering with IPv6 seems to work fine.  The phone sends RAs with it's
> allocated prefix. It's also sharing the DNS64 enabled DNS servers via
> DHCPv6, so DNS64/NAT64 works fine from the clients (of the phone).

Didn't try USB tethering, but there's no IPv6 on the wireless one as
far as I can tell. Here's how it looks under the hood with wireless
tethering enabled, using IPv6 for upstream connectivity:

shell at maguro:/ $ ip -4 address list scope global                               
10: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    inet 192.168.43.1/24 brd 192.168.43.255 scope global wlan0
760: clat4: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1480 qdisc pfifo_fast state UNKNOWN qlen 500
    inet 192.0.0.4/32 brd 192.0.0.4 scope global clat4
shell at maguro:/ $ ip -6 address list scope global                               
6: rmnet0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qlen 1000
    inet6 2a00:e18:8000:474::f0d9:7a01/128 scope global 
       valid_lft forever preferred_lft forever
shell at maguro:/ $ ip -6 route show dev wlan0                                    
shell at maguro:/ $ getprop ro.product.model                                      
Galaxy Nexus
shell at maguro:/ $ getprop ro.build.description                                  
yakju-user 4.3 JWR66Y 776638 release-keys

Tore