In my setup, running the wizard the following is inserted into the besclient.config file
[Software\BigFix\EnterpriseClient\Settings\Client\Location By IP Range]
value = N/A
effective date = Wed,%2008%20Mar%202017%2015:03:22%20-0600
[Software\BigFix\EnterpriseClient\Settings\Client\Location By Subnet]
value = Aixland
effective date = Wed,%2008%20Mar%202017%2015:24:43%20-0600
so the action does pop it in correctly.
The actual action script is :
setting “Location By Subnet”="{concatenation “, " of (unique values of (if (number of (subnet addresses whose (it as string != “0.0.0.0”) of ip interfaces whose (loopback of it = false) of network) < 1) then “n/a” else preceding texts of firsts “:-:” of following texts of substrings ((it as string & “;-;”) of (subnet addresses whose (it as string != “0.0.0.0”) of ip interfaces whose (loopback of it = false) of network)) of ((rope “” & “9.53.116.0;-;Aixland:-:”) as string)))}” on “Wed, 8 Mar 2017 21:24:43 +0000” for client
so I would suggest that you run the wizard, leave it as a policy action for ALL COMPUTERS and let it add it for you once the client reports in to the main Root Server.
Dave L.