[ipv6-wg] IPv6-only network at RIPE70

On Tue, May 12, 2015 at 2:50 PM, Jérôme Fleury <jerome at fleury.net> wrote:
> I suspect Dropbox to hardcode their IP in their application. It's not
> working at all on ipv6-only.

Heh, they are not hardcoding anything, they are just not consistent:

1) asking for AAAA for client.v.dropbox.com

15:10:32.233655 IP6 2001:67c:64:49:4c02:64ed:71e7:a16.62668 >
nat64-ubuntu.ripemtg.ripe.net.domain: 54028+ AAAA?
client.v.dropbox.com. (38)
15:10:32.234425 IP6 2001:67c:64:49:4c02:64ed:71e7:a16.58556 >
nat64-ubuntu.ripemtg.ripe.net.domain: 28552+ AAAA? d.dropbox.com. (31)
15:10:32.270841 IP6 nat64-ubuntu.ripemtg.ripe.net.domain >
2001:67c:64:49:4c02:64ed:71e7:a16.58556: 28552 3/4/0 CNAME
d.v.dropbox.com., AAAA 64:ff9b::6ca0:ace1, AAAA 64:ff9b::6ca0:acc1
(241)
15:10:32.279229 IP6 nat64-ubuntu.ripemtg.ripe.net.domain >
2001:67c:64:49:4c02:64ed:71e7:a16.62668: 54028 2/4/0 AAAA
64:ff9b::6ca0:accc, AAAA 64:ff9b::6ca0:acec (230)

2) but then asking for A only:

15:10:32.643915 IP6 2001:67c:64:49:4c02:64ed:71e7:a16.51052 >
nat64-ubuntu.ripemtg.ripe.net.domain: 42675+ A? d.v.dropbox.com. (33)

15:10:32.647198 IP6 nat64-ubuntu.ripemtg.ripe.net.domain >
2001:67c:64:49:4c02:64ed:71e7:a16.51052: 42675 2/4/0 A
108.160.172.193, A 108.160.172.225 (201)

15:10:32.650615 ARP, Request who-has d.v.dropbox.com tell
169.254.64.90, length 28

-- 
SY, Jen Linkova aka Furry