librsvg, remote images

[Steven Edwards <cureadvocate gmail com>]

I'm unable to render an SVG when an <image /> element references a
remote image.  Is there a network initialization function I'm missing?

An example:

http://codepen.io/stephenwithav/pen/PPaEZJ

That same SVG, when rendered locally to a cairo surface, returns a
transparent png.  SVGs that don't reference remote images render
perfectly.

Any and all help will be greatly appreciated.

Best,

Steven