add rhel dnf pkg inst instruction

Author: tanelpoder

next/README.md

@@ -13,9 +13,17 @@ cd next
 To install the system packages (on Ubuntu 24.04) for compiling the binary, run:
 
 ```
-sudo apt install libbpf-dev libbpf-tools clang llvm libbfd-dev
+sudo apt install libbpf-dev libbpf-tools clang llvm libbfd-dev libelf1 libelf-dev zlib1g-dev
 ```
 
+On RHEL9:
+
+```
+sudo dnf install libbpf libbpf-tools clang elfutils-libelf elfutils-libelf-devel zlib-devel
+
+```
+
+
 To install required libbpf dependencies for the GitHub repo, run:
 
 ```