Tailscale test patch for https://github.com/tailscale/tailscale/issues/8785#issuecomment-1664934093

store_aws.patch

diff --git a/ipn/store/awsstore/store_aws.go b/ipn/store/awsstore/store_aws.go
index 0fb78d45..f233573c 100644
--- a/ipn/store/awsstore/store_aws.go
+++ b/ipn/store/awsstore/store_aws.go
@@ -7,9 +7,11 @@
 package awsstore
 
 import (
+       "bytes"
        "context"
        "errors"
        "fmt"
+       "log"
        "regexp"
 
        "github.com/aws/aws-sdk-go-v2/aws"
@@ -149,6 +151,11 @@ func (s *awsStore) ReadState(id ipn.StateKey) (bs []byte, err error) {
 
 // WriteState implements the Store interface.
 func (s *awsStore) WriteState(id ipn.StateKey, bs []byte) (err error) {
+       if was, err := s.memory.ReadState(id); err == nil && bytes.Equal(was, bs) {
+               log.Printf("XXX useless write of %q", id)
+               return nil
+       }
+
        // Write the state in-memory
        if err = s.memory.WriteState(id, bs); err != nil {
                return