- Explicitly disabled posix mode in all bash scripts as we are
using several features not supported in posix mode (bnc#739338).
- Fixed to quote config / interface variables in ifservices script
and cleaned up content of the ESSID which gets appended to them
by NetworkManager dispatcher hook (bnc#735394, CVE-2011-4182).
Fixed also to return proper exit code 0 in NM dispatcher hooks.
- Changed to call ip addr flush in ifdown, but after ip link set
down as it does not cause ipv6 sysctl tree side effects then
at least with more recent kernels (bnc#580018,bnc#559170).