I have Half-Life (app id: 70) installed. It ships build 9911 with hl.so (SHA1:a9f5d8eef0b206524167028a792ddcbb28f746d2).
A fresh HLDS install via SteamCMD (app id: 90) ships build 9907 with hl.so (SHA1:fde38762b7258cdbb92b10802ecdf6b7dc280ccc).

I noticed that HLDS is usually behind the Half-Life client installation, so basically I have to run outdate dedicated servers.

Why?