Description of Problem: when ifdown is called the check_default_route
function is called in network-scripts.  when the line "/sbin/route -n
 awk..." is run, gawk spins on the CPU.
Version-Release number of selected component (if applicable): I've
tested gawk-3.0.6-1 from 7.0, gawk-3.0.6-2 from 7.1, and gawk-3.1.0-4
from rawhide.
How Reproducible: 100% on this test case.


Steps to Reproduce:
1. bring down your default route
2. run /sbin/route -n | gawk 'BEGIN{r=1} $3=="0.0.0.0" && $4=="UG" {r=0} END{print r}'`
3. watch the process sit on the CPU

Actual Results: if the default route exists, this works as expected.
if the default route is not there, it hangs on the processor (i.e.
strace shows _no_ system calls occuring). gdb shows it in double_to_int().
Expected Results: it should work for both cases.


Additional Information: this is on a 7.0 install, latest errata applied to a
	multia/udb 21064