IPv4 on Joel Hanson https://joelhanson.com/tags/ipv4/ Recent content in IPv4 on Joel Hanson Hugo -- gohugo.io en joelhanson025@gmail.com (Joel Hanson) joelhanson025@gmail.com (Joel Hanson) © Joel Hanson Mon, 21 Sep 2026 21:00:00 +0530 Why curl 127.1 Is the Same as curl 127.0.0.1 https://joelhanson.com/posts/33-why-curl-127-1-is-localhost/ Mon, 21 Sep 2026 21:00:00 +0530 joelhanson025@gmail.com (Joel Hanson) https://joelhanson.com/posts/33-why-curl-127-1-is-localhost/ curl 127.1 lands on 127.0.0.1 because BSD inet_aton() still accepts abbreviated IPv4 — a.b is 8+24 bits, and hex, octal, and bare integers parse the same way.