PowerProtect Data Manager: Block Volume Protection Engine Install Script Fails When IPv6 is disabled

Summary: The installSPP shell script fails on Red Hat Enterprise Linux when Internet Protocol version 6 (IPv6) is disabled at the kernel (ipv6.disable=1 in Grand Unified Bootloader (GRUB)). The script attempts to read sysctl net.ipv6.conf.all.disable_ipv6, which does not exist, causing an error. ...

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Symptoms

The installSPP.sh script stops at the Check if IPv6 is enabled step during a bare‑metal install of the Block Volume Protection Engine.

sysctl: cannot stat /proc/sys/net/ipv6/conf/all/disable_ipv6: No such file or directory

installSPP.sh failed to check if IPv6 is enabled with error "sysctl: cannot stat /proc/sys/net/ipv6/

Command output showing missing IPv6 sysctl entry:

# Command executed by the installer
sysctl -n net.ipv6.conf.all.disable_ipv6
sysctl: cannot stat /proc/sys/net/ipv6/conf/all/disable_ipv6: No such file or directory

System configuration indicating IPv6 is disabled at the kernel level:

# Relevant GRUB configuration line in /etc/default/grub
GRUB_CMDLINE_LINUX="resume=/dev/mapper/vg00-lv_swap rd.lvm.lv=vg00/lv_root rd.lvm.lv=vg00/lv_swap selinux=0 crashkernel=512M ipv6.disable=1"

        
Cause

        
This is a known issue in PowerProtect 19.22.0-16. The installSPP.sh script attempts to read IPv6 sysctl parameters during the Check if IPv6 is enabled step. When IPv6 is disabled at the kernel level (for example, ipv6.disable=1 in the GRUB command), the corresponding /proc/sys/net/ipv6 entries do not exist. The script does not include a check for kernel‑level IPv6, so it attempts to configure RabbitMQ listeners and IP‑forwarding parameters that rely on IPv6 sysctl settings.

  
The script runs the following sysctl command, which fails because the file is absent:

  
sysctl -n net.ipv6.conf.all.disable_ipv6 sysctl: cannot stat /proc/sys/net/ipv6/conf/all/disable_ipv6: No such file or directory

        
Resolution

        
The issue has been resolved in PowerProtect release 19.22.0-24. Install the latest PowerProtect Data Manager release to resolve the symptom. If required, contact Dell Support for assistance or with additional questions. The newest available releases are available on the PowerProtect Data Manager Drivers & Downloads page.


                    
Additional Information

        
Workaround:

  
If IPv6 is not used on the server, remove ipv6.disable=1 from /etc/default/grub and reboot the machine.




        

        
        
Affected Products

        PowerProtect Data Manager







                        

                            

    

        

            

                
                    
 Article Properties

                
            

            

                

                        
Article Number: 000427340

                

                
                

                        
Article Type: Solution

                

                

                        
Last Modified: 24 May 2026


                

                    

                            
Version:  2

                    


            


        

    

    

        

            

                
                    
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