User talk:Lequocthanh1999

October 2020
Hello, I'm Joseywales1961. I wanted to let you know that I reverted one of your recent contributions —specifically this edit to Classless Inter-Domain Routing—because it did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Help desk. Thanks. JW 1961  Talk  19:17, 28 October 2020 (UTC)