I got this and answered yes.
Code:
apt-get install firmware-realtek
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
firmware-realtek
0 upgraded, 1 newly installed, 0 to remove and 615 not upgraded.
Need to get 215 kB of archives.
After this operation, 493 kB of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
firmware-realtek
Install these packages without verification [y/N]?