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  • 10.0.0.0/8
  • 172.16.0.0/12
  • 192.168.0.0/16 (
    • tl;dr - use a subnet from this range to avoid any weird issues
    )
    • → 192.168.N.0/24 where N is a number from 0 and 255.

RFC1918 within NTNU

NTNU is however using the following subnets within the RFC1918 range, therefore their use should be avoided:

  • 10.0.0.0/8 - Large pieces of this range is already in use; and this block is likely to be used in new subnets within NTNU as well. The general purpose floatin-IP's assigned in openstack is also from this range, and it can thus involve a bit of confusion if both the vm's IP and the floating-ip looks the same. It is thus recommended not to use this block at all.

  • 172.17.0.0/16 - This is the default subnet for docker, and might give you all kinds of weird behaviorbehavio