libnet: avoid failing setting up filter with e1000 like cardnames
libnet: avoid failing setting up filter with e1000 like cardnames

e1000 cardname was of the form e1000:vendor:bus:device:function ..
where other cardnames were simply in the form of the name itself.

Signed-off-by: Roni Häcki <ac1438dbed87008d3b9d6c77a0ffddf380f86b06@inf.ethz.ch>

BarrelfishOS/barrelfish,kishoredbn/barrelfish,BarrelfishOS/barrelfish,BarrelfishOS/barrelfish,BarrelfishOS/barrelfish,kishoredbn/barrelfish,kishoredbn/barrelfish,BarrelfishOS/barrelfish,BarrelfishOS/barrelfish,kishoredbn/barrelfish,BarrelfishOS/barrelfish,kishoredbn/barrelfish,BarrelfishOS/barrelfish,BarrelfishOS/barrelfish,kishoredbn/barrelfish