First I would try the following and see if it resolves the problem. If not, we could try manually setting the GetBox/Computers to a different DNS server.
Powercycle (power off for at least a minute) the GetBox II (Assuming it does not have a battery backup)
Then flush the DNS on both the PC and Mac.
From a terminal/command prompt run the following commands for flushing the DNS.
dscacheutil -flushcache (for Mac)
ipconfig /flushdns (for PC)
Powercycle (power off for at least a minute) the GetBox II (Assuming it does not have a battery backup)
Then flush the DNS on both the PC and Mac.
From a terminal/command prompt run the following commands for flushing the DNS.
dscacheutil -flushcache (for Mac)
ipconfig /flushdns (for PC)