I am configuring EKS.
I am using US-West-1 and configuring it on V1.29.

The current problem is that when you create a nodeGroup in EKS, add a node, and operate it, the DNS connection fails for the node created in subnet-c.
However, the same problem does not occur in nodes created in subnet-b.

Subnet-b and c are using the same Network ACL, and the ACL allows DNS UDP/TCP for in/out bounds.

And the routing table is also structured the same way.

The DNS endpoint is as follows.

/etc/resolv.conf file

search <name>.svc.cluster.local svc.cluster.local cluster.local us-west-1.compute.internal
nameserver 172.20.0.10
options ndots:5

What else can I check to solve the problem?