diff --git a/templates/common/cloud-platform-alt-dns/files/coredns-corefile.yaml b/templates/common/cloud-platform-alt-dns/files/coredns-corefile.yaml
index 2551b16537..5526885ce6 100644
--- a/templates/common/cloud-platform-alt-dns/files/coredns-corefile.yaml
+++ b/templates/common/cloud-platform-alt-dns/files/coredns-corefile.yaml
@@ -4,10 +4,10 @@ contents:
   inline: |
     . {
         errors
-        bufsize 512
         health :18080
         forward . {{`{{- range $upstream := .DNSUpstreams}} {{$upstream}}{{- end}}`}} {
             policy sequential
+            force_tcp
         }
         cache 30
         reload