The Host On-Demand server supports the following operating systems that support IPv6:
| Operating system | Vendors and versions supporting IPv6 |
| Linux | Any supported version of Linux that includes Linux kernel 2.2 or later, such as Red Hat Linux 8.0 Personal, 8.0 Professional, 9.0 Personal, 9.0 Professional |
| Sun Solaris | Solaris 8, 9 |