I ran into a problem trying to install libasound2-dev on the new 4.9.4 driver for the Cirrus Logic Audio Card--->
pi@raspberrypi:/ $ sudo apt-get install libasound2-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 95.5 kB of archives.
After this operation, 445 kB of additional disk space will be used.
Err http://archive.raspberrypi.org/debian/ jessie/main libasound2-dev armhf 1.0.28-1+rpi1
Could not resolve 'archive.raspberrypi.org'
E: Failed to fetch http://archive.raspberrypi.org/debian/pool/main/a/alsa-lib/libasound2-dev_1.0.28-1+rpi1_armhf.deb Could not resolve 'archive.raspberrypi.org'
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
Do how does one do this? It appears that libasound2-dev for RPI1 was targeted, and I think there is an libasound2-dev for RPI2.