Not unexpected, but Josh Gerstein from Politico broke the news via twitter:

Justice Department just filed emergency stay request with 9th Circuit on #DADT. More TK

From the motion, here’s what the Obama administration wants:

We respectfully request that the Court enter an administrative stay by today October 20, 2010, pending this Court’s resolution of the government’s motion for a stay pending appeal, which would maintain the status quo that prevailed before the district court’s decision while the Court considers the government’s stay motion.

I’ve uploaded the document to
Emergency Stay Request