diff --git a/2025/xg-infra-upgrade-2025.md b/2025/xg-infra-upgrade-2025.md
index 1fd835f..47fed4b 100644
--- a/2025/xg-infra-upgrade-2025.md
+++ b/2025/xg-infra-upgrade-2025.md
@@ -158,6 +158,7 @@ See https://docs.oracle.com/cd/E78901_01/html/E78912/gprhq.html
 
 * https://blog.marcg.pizza/marcg/a-quick-and-dirty-dns-server-using-freebsd-100daystooffload-day-28
 * https://etherarp.net/dnsmasq/index.html
+* https://vlads.me/post/setting-up-dns-adblocker-freebsd-jail/
 # See also
 
 * [[freebsd-notes]]