diff --git a/jenkins/Build.groovy b/jenkins/Build.groovy
index 608fa8f1d776..1bc2f89c8263 100644
--- a/jenkins/Build.groovy
+++ b/jenkins/Build.groovy
@@ -257,12 +257,6 @@ def createKubernetesPodConfig(image, type, arch = "amd64")
         nodeLabelPrefix = "cpu"
         break
     }
-    // Temporarily avoid an arm64 builder with repeated pod DNS/JNLP failures seen in Build-SBSA #5564.
-    def blockedNodeAffinity = arch == "arm64" ? '''
-                              - key: "kubernetes.io/hostname"
-                                operator: NotIn
-                                values:
-                                - "rl300-0021.ipp2a1.colossus"''' : ""
     def nodeLabel = trtllm_utils.generateNodeLabel(nodeLabelPrefix)
     def pvcVolume = """
                 - name: sw-tensorrt-pvc
@@ -299,7 +293,6 @@ def createKubernetesPodConfig(image, type, arch = "amd64")
                                 values:
                                 - "core"
                                 - "qa_only"
-${blockedNodeAffinity}
                 nodeSelector: ${selectors}
                 imagePullSecrets:
                   - name: ${ARTIFACTORY_IMAGE_PULL_SECRET}
diff --git a/jenkins/BuildDockerImage.groovy b/jenkins/BuildDockerImage.groovy
index efcdc1deff9c..ef228716dc35 100644
--- a/jenkins/BuildDockerImage.groovy
+++ b/jenkins/BuildDockerImage.groovy
@@ -127,66 +127,6 @@ def createKubernetesPodConfig(type, arch = "amd64", build_wheel = false)
                   kubernetes.io/os: linux
                   kubernetes.io/arch: ${arch}"""
 
-    if (build_wheel && arch == "arm64") {
-        // For aarch64, we need to use hostname to fix the ucxx issue when building wheels
-        selectors += """
-                affinity:
-                    nodeAffinity:
-                        requiredDuringSchedulingIgnoredDuringExecution:
-                            nodeSelectorTerms:
-                                - matchExpressions:
-                                    - key: "kubernetes.io/hostname"
-                                      operator: In
-                                      values:
-                                        - "rl300-0008.ipp2u1.colossus"
-                                        - "rl300-0014.ipp2u1.colossus"
-                                        - "rl300-0023.ipp2u1.colossus"
-                                        - "rl300-0024.ipp2u1.colossus"
-                                        - "rl300-0030.ipp2u1.colossus"
-                                        - "rl300-0040.ipp2u1.colossus"
-                                        - "rl300-0041.ipp2u1.colossus"
-                                        - "rl300-0042.ipp2u1.colossus"
-                                        - "rl300-0043.ipp2u1.colossus"
-                                        - "rl300-0044.ipp2u1.colossus"
-                                        - "rl300-0045.ipp2u1.colossus"
-                                        - "rl300-0046.ipp2u1.colossus"
-                                        - "rl300-0047.ipp2u1.colossus"
-        """
-    } else if (arch == "arm64") {
-        // Temporarily avoid an arm64 builder with repeated pod DNS/JNLP failures seen in Build-SBSA #5564.
-        selectors += """
-                affinity:
-                    nodeAffinity:
-                        requiredDuringSchedulingIgnoredDuringExecution:
-                            nodeSelectorTerms:
-                                - matchExpressions:
-                                    - key: "kubernetes.io/hostname"
-                                      operator: NotIn
-                                      values:
-                                        - "rl300-0021.ipp2a1.colossus"
-        """
-    }
-
-    if (arch == "amd64") {
-        // For x86_64, we block some nodes to avoid unstable network access.
-        selectors += """
-                affinity:
-                    nodeAffinity:
-                        requiredDuringSchedulingIgnoredDuringExecution:
-                            nodeSelectorTerms:
-                                - matchExpressions:
-                                    - key: "kubernetes.io/hostname"
-                                      operator: NotIn
-                                      values:
-                                        - "sc-ipp-blossom-prod-k8w-105"
-                                        - "sc-ipp-blossom-prod-k8w-114"
-                                        - "sc-ipp-blossom-prod-k8w-115"
-                                        - "sc-ipp-blossom-prod-k8w-121"
-                                        - "sc-ipp-blossom-prod-k8w-123"
-                                        - "sc-ipp-blossom-prod-k8w-124"
-        """
-    }
-
     def archSuffix = arch == "arm64" ? "arm" : "amd"
     def jnlpImage = "artifactory.pdx.nvidia.com/sw-ipp-blossom-sre-docker-local/lambda/custom_jnlp_images_${archSuffix}_linux:jdk17"
 
diff --git a/jenkins/L0_Test.groovy b/jenkins/L0_Test.groovy
index fbb900a59ffc..db5c0170f4fa 100644
--- a/jenkins/L0_Test.groovy
+++ b/jenkins/L0_Test.groovy
@@ -4018,12 +4018,15 @@ def createKubernetesPodConfig(image, type, arch = "amd64", gpuCount = 1, perfMod
                     imagePullPolicy: Always
         """
     }
-    // Temporarily avoid an arm64 CPU builder with repeated pod DNS/JNLP failures seen in Build-SBSA #5564.
-    def blockedNodeAffinity = targetCloud == "kubernetes-cpu" && arch == "arm64" ? '''
-                              - key: "kubernetes.io/hostname"
+    // CPU test pods mount the model scratch from 10.117.145.14, which can't be accessed from ipp6/ipp9 DC.
+    // Pods placed there stay in ContainerCreating. Build stage pods do not mount the model scratch,
+    // so they can still use these nodes.
+    def scratchUnreachableNodeAffinity = type == "cpu" ? '''
+                              - key: "region"
                                 operator: NotIn
                                 values:
-                                - "rl300-0021.ipp2a1.colossus"''' : ""
+                                - "ipp6"
+                                - "ipp9"''' : ""
     def nodeLabel = trtllm_utils.generateNodeLabel(nodeLabelPrefix)
     def pvcVolume = """
                 - name: sw-tensorrt-pvc
@@ -4077,7 +4080,7 @@ def createKubernetesPodConfig(image, type, arch = "amd64", gpuCount = 1, perfMod
                                 values:
                                 - "core"
                                 - "qa_only"
-${blockedNodeAffinity}
+${scratchUnreachableNodeAffinity}
                 nodeSelector: ${selectors}
                 imagePullSecrets:
                   - name: ${ARTIFACTORY_IMAGE_PULL_SECRET}