Is Facebook trying to scan my Fritzbox ?

[Smithsonian1974]

Hi there

got an strange message while browsing with

- Firefox 22.0a2 (2013-04-17)
- Noscript 2.6.6
- Fritzbox Addon 1.7.0

I had my Fritzbox opened in a tab and a facebook-Page.

Suddenly this message appeared http://smithsonian1974.net/Files/ABE_FbFB.jpg

What does this message mean ?
It seems like Facebook is trying to scan my fritzbox. Message always comes when refreshing the facebook-tab.

greets

Smithsonian1974

[Giorgio Maone]

Is your Fritzbox configured to make any content blocking?
Might that fritz.box URL which ABE denies from loading be a "Blocked content" message which replaces some ad or otherwise unwanted frame?
Could you try to copy&paste it in a standalone tab to see what it looks like?

[Smithsonian1974]

I think a standalone Tab wouldnt work.
The message only appears when Facebook and Fritzbox are opened in the same BrowserWindow in seperate Tabs.
It does not appear always . Yesterday i tried to reproduce it a long time but it doesnt appear.

Only in the late evening i had the luck to reproduce it and make the screenshot.

[dhouwn]

Some feature of the Fritzbox add-on?

[Smithsonian1974]

I think i tested i FritzBox-addon deactiviated,too.

I will try to test it again.
Its a bit diffucult because the message isnt appearing always.
Mostly in the late evening.

Will post further details if available.
ANd it only appears since the last update to Firefox 22.
I never saw this message before.

greets and thanx

Frank