{"adaptor" : "ip01" , "gateway" : "192.168.0.1" , "net_mask" : "255.255.0.0" }
{"ip_v4_address": "10.38.32.202","mac_address": "A0:12:34:45"}
{"adaptor": "ip12", "network_ip_v4_address":["10.38.61.1","10.38.32.1"]}

{"adaptor" : "ip01" , "gateway" : ["192.168.0.1"] , "net_mask" : ["255.255.0.0"]}
{"ip_v4_address" : ["10.38.32.202"] , "mac_address" : "A0:12:34:45"}
{"adaptor" : "ip12" , "network_ip_v4_address" : ["10.38.61.1","10.38.32.1"]}

jq -c '
def decend(f):
  . as $in | 
  if type == "object"
  then
      reduce keys[] as $key
      ( {}; . + { ($key) : ($in[$key] | decend(f)) } ) | f
  else f
  end
;

decend(
   if type == "string" and
      test("^[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}$")
   then [ . ] 
   else . 
   end)' infile