libisofs6 from isv:Rancher:Elemental:Maintenance:5.5 project
Select Your Operating System
Add repository and install manually
For standard run the following as root:
zypper addrepo https://download.opensuse.org/repositories/isv:Rancher:Elemental:Maintenance:5.5/standard/isv:Rancher:Elemental:Maintenance:5.5.repo zypper refresh zypper install libisofs6