NET-SNMP-URL in generator's Makefile
NET-SNMP-URL is disabled in the generator's makefile.
I can't download file from this url.
https://raw.githubusercontent.com/net-snmp/net-snmp/v5.9/mibs
When I cry to open it , return 404.
Is there another place or url where I can download the relevant files?
You need to specify a file, mibs/ is just a directory and GitHub doesn't allow directory listings. For example: https://raw.githubusercontent.com/net-snmp/net-snmp/v5.9/mibs/AGENTX-MIB.txt. You can find the listing on https://github.com/net-snmp/net-snmp/tree/v5.9/mibs.
As you can see from the Makefile, we download specific files, not the whole directory: https://github.com/prometheus/snmp_exporter/blob/8678b6022c439074555f958fdaa54517c10ee711/generator/Makefile#L184-L198