Limit scope of IFS change in ioc-network
Limit scope of IFS change in ioc-network

Fixes a bug affecting the shutdown of jails with shared IP networking. Setting `IFS=','` sticks for the rest of the script after the first call to `__stop_legacy_networking`, and causes many subsequent functions to misbehave. Limiting `IFS` to local scope ensures the rest of the script is not affected.
vtalk/iocage,notdavidcronenberg/iocage,sineer/iocage,freqlabs/iocage,moviuro/iocage,lattera/iocage,dlangille/iocage,Hivlaher/iocage,skoef/iocage,skunkwerks/iocage,sineer/iocage,sineer/iocage