Comment 1 for bug 1007151

netaddr is used for validation in the IPField in forms that require entering of IP value/range. It is added to test-requires only, because nova already has it as a requirement and installs it. I'm not sure if this is correct that way.. it just left kind of undecided some time ago.. However there is another good library for IP validation - ipaddr that could be used, in case when netaddr is not a good enough...