diff --git a/misc/build.func b/misc/build.func
index 1945677e6..79bb6d51d 100644
--- a/misc/build.func
+++ b/misc/build.func
@@ -1286,6 +1286,10 @@ EOF
         msg_ok "Network in LXC is reachable"
         break
       fi
+      if pct exec "$CTID" -- curl -fsSIL --max-time 10 deb.debian.org >/dev/null 2>&1; then
+        msg_ok "Network in LXC is reachable"
+        break
+      fi
       if [ "$i" -lt 10 ]; then
         msg_warn "No network yet in LXC (try $i/10) – waiting..."
         sleep 3