[atlas] IPv6 and Atlas probe v3

My probe works fine on IPv4, obtaining IP address, router, and DNS
servers via DCHP.

The IPv6 capability has me curious with two questions...


I statically configured the IPv6 address via the web interface.  I gave
the probe an IPv6 address from my prefix, a gateway address, and the IP
address of a DNS recursive server provided by my tunnel vendor.

The IPv6 address shows up OK on the web interface ("Internet Address")

The AS Number also shows up fine.

The Gateway is "Undetermined/Unknown"

The IP addr of the DNS server is listed as shown below.


In the text table below the configuration info, I see:
  ("V" is a check,   "X" is an X)

 	Static Enabled 	Probe Knows 	Probe Uses 	Last Static Address Given
IPv6 		V			V			V       2001:470:xxx:xxx::xxx
DNS 		V			V			X	  2001:470:20::2 




Question #1:  Why is there an "X" for DNS in the "Probe Uses" column?
Is there something wrong with that DNS server?  


When I query DNS from another box on the same subnet as the Atlas probe
I get valid results:

; <<>> DiG 9.8.3-P4 <<>> @2001:470:20::2 atlas.ripe.net any
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 19739
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;atlas.ripe.net.			IN	ANY

;; ANSWER SECTION:
atlas.ripe.net.		5922	IN	AAAA	2a01:4f8:121:30a3::78:16
atlas.ripe.net.		5911	IN	A	178.63.78.16

;; Query time: 21 msec
;; SERVER: 2001:470:20::2#53(2001:470:20::2)
;; WHEN: Mon Jul  8 12:24:01 2013
;; MSG SIZE  rcvd: 76





I also noticed this sentence at the bottom of the
https://atlas.ripe.net/doc/static-config page:

"...As of now, we have no way of preventing the probe from accepting
RAs. So if there is an IPv6 (rogue) RA on you network, it can/will
override part of the static configuration. We're unsure if this will
change in the future. ..."


I do have RA support on the subnet, though I would not classify it as
"rogue".  :)    The RA provides the IPv6 prefix, prefix length, and the
IPv6 address of the recursive DNS server.  This RA support has been
used by another box on the subnet, and it seems to work fine.


Question #2: Does the Atlas v3 probe use RA if they are present?


Thanks.