diff --git a/.github/workflows/linkcheck.yml b/.github/workflows/linkcheck.yml
index b7c06259225..9c9502033ce 100644
--- a/.github/workflows/linkcheck.yml
+++ b/.github/workflows/linkcheck.yml
@@ -35,7 +35,7 @@ jobs:
       - name: Check for broken links below threshold 6
         run: |
           broken_count=$(grep -c "broken" output.txt)
-          if [[ $broken_count -ge 6 ]]; then
+          if [[ $broken_count -ge 3 ]]; then
             echo "Too many broken links detected: $broken_count"
             exit 1
           else
diff --git a/doc/rtd/conf.py b/doc/rtd/conf.py
index 0dc3b48397e..9c06bdc0685 100644
--- a/doc/rtd/conf.py
+++ b/doc/rtd/conf.py
@@ -120,9 +120,11 @@
 autosectionlabel_maxdepth = 2
 
 # Sphinx-linkcheck config
-linkcheck_ignore = [   r"http://instance-data.*", r"https://powersj.io.*",
-		       r"http://169.254.169.254.*", r"http://10.10.0.1.*"
+linkcheck_ignore = [
+    r"http://\[fd00:ec2::254.*", r"http://instance-data.*",
+    r"https://powersj.io.*", r"http://169.254.169.254.*", r"http://10.10.0.1.*"
 ]
+
 linkcheck_anchors_ignore_for_url = (
     r"https://github.com/canonical/cloud-init.*",
     r"https://github.com/canonical/ubuntu-pro-client.*"