Data Domain: Troubleshooting a "Net Set Up Flag Failure" Error

When an interface is enabled, the error net set up flag failure may appear:

sysadmin@dd01-p1(active:1)# net enable veth2
net set up flag failure for: eth8a
sysadmin@dd01-p1(active:1)#

sysadmin@dd01-p1(active:1)# net enable ethMa 
net set up flag failure for: ethMa
sysadmin@dd01-p1(active:1)#

There can be multiple causes of this error:

• The network card driver must be unloaded and reloaded.
• A memory allocation issue occurs in one of the file system layers.
• The network card may be defective.
• Older Data Domain models using Cyber Recovery may not have enough memory installed.  

1. Reboot the Data Domain system. If the issue persists, continue to step 2.
2. Drain flea power from the Data Domain system:
   1. Power the Data Domain system down gracefully.
   2. Disconnect the server from all power and network cables.
   3. Hold down the power button continuously for at least ten seconds.
   4. Insert power and network cables back into the system.
   5. Wait two minutes before powering on the server to give the iDRAC time to initialize.
   6. Power the system on.
3. Engineering recommends that older Data Domain systems be rebooted approximately every 3 months. This helps to prevent Ethernet driver allocation failure due to memory fragmentation.
4. If the issue persists, contact Data Domain support.