curl -v --anyauth "http://root:pass1234@10.0.3.173/local/fflprapp/allow_list.cgi" -s -d@white.xml

curl -v --anyauth "http://root:pass1234@10.0.3.173/local/fflprapp/black_list.cgi" -s -d@black.xml

Lists examples: black.xml, white.xml

Please use xml validator www.xmlvalidation.com to check your files. 

Video illustration: watch online, or download AVI or MP4.