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Avoiding restricted subnets and IP addresses
Contents
Restricted subnets
You can’t use the following subnets when creating networks:
- 224.0.0.0/4 – multicast
- 240.0.0.0/4 – reserved
- 127.0.0.0/8 – localhost
- 169.254.0.0/16 – DHCP autoconfiguration
- 0.0.0.0/8 – historical broadcast
- 192.88.99.0/24 – anycast routing
In addition, avoid using any IP addresses or subnets that are accessible on the public Internet.
Recommended subnets
The following subnet ranges are designated as private address spaces, as defined in RFC 1918:
- 10.0.0.0 - 10.255.255.255 (10/8 prefix)
- 172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
- 192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
Notes
- By default, Skytap automatic networks bind the subnet gateway to the last usable address in the subnet. You can change the subnet gateway address in the automatic network settings.
- Skytap automatic networking automatically assigns IP addresses from the RFC 1918 private address space.
- For more information, see the Wikipedia article on private networks.
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