Description of problem:
if interface name is exactly 16 characters long, the nameif program crashes due
to buffer owerflow

Version-Release number of selected component (if applicable):
net-tools-1.60-62
net-tools-1.60-73

How reproducible:
always

Steps to Reproduce:
1.modprobe dummy
2. ifconfig -a to get MAC_ADDR of the dummy interface
3. echo "dummy01234567890 MAC_ADDR" >>/etc/mactab
4. nameif
  
Actual results:
buffer owerflow


Expected results:
interface name change or error that name is too long

Additional info:
nameif returns weird messages when name is too long...