[BUG]CoreDNS reverse dns query didn't work on AKS 1.32

[Calotte]

Describe the bug
A clear and concise description of what the bug is.
We have a program that will get the pod's dns via dns reverse query, it works in aks 1.31 but on 1.32 it failed with the following error:

2025-03-03T06:54:39.433868+00:00 af80d705-9259-4940-84a6-f30f750da0af        directdns         debug looking up PTR for 10.240.10.253 using server 10.0.0.10
2025-03-03T06:54:39.438568+00:00 af80d705-9259-4940-84a6-f30f750da0af        directdns         error invalid response for 10.240.10.253: NXDOMAIN

To Reproduce
Steps to reproduce the behavior:

dig a pod ip's dns.

Also can use this function:

func doServerReverseLookup(ctx context.Context, addr string, server string, logger *log.Entry) ([]string, error) {
	logger.Debugf("looking up PTR for %s using server %s", addr, server)
	c := dns.Client{}
	m := dns.Msg{}
	reverseAddr, err := dns.ReverseAddr(addr)
	if err != nil {
		return nil, fmt.Errorf("could not reverse %s: %v", addr, err)
	}
	m.SetQuestion(reverseAddr, dns.TypePTR)
	r, t, err := c.ExchangeContext(ctx, &m, server+":53")
	if err != nil {
		return nil, fmt.Errorf("failed to perform PTR lookup for %s: %v", addr, err)
	}
	logger.Tracef("PTR lookup for %s took %v", addr, t)
	if r.Rcode != dns.RcodeSuccess {
		return nil, fmt.Errorf("invalid response for %s: %v", addr, dns.RcodeToString[r.Rcode])
	}
	hosts := make([]string, 0)
	for _, ans := range r.Answer {
		host := ans.(*dns.PTR).Ptr
		if strings.HasSuffix(host, ".") {
			host = host[0 : len(host)-1]
		}
		hosts = append(hosts, host)
	}

	return hosts, nil
}

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Environment (please complete the following information):

• CLI Version 1.31
• Kubernetes version 1.32
• CLI Extension version [e.g. 1.7.5] if applicable
• Browser [e.g. chrome, safari] is applicable

Additional context
Add any other context about the problem here.

[robbiezhang]

CoreDNS issue disccused here:
coredns/coredns#7177

Before the coredns makes a path through, AKS team is evaluating if we should downgrade coredns to 1.11.3 for k8s 1.32 clusters.