Problem after upgrading to v1.26

Hello all,
last week I have upgraded to 1.26 - the latest version - kubeadm, kubelet, kubectl.
I didn’t read before that that there are some changes in kube-proxy :slight_smile:

I have elastic + kibana. There is no connection from every pod to the outside.
is there any way to fix this and how. I read about iptables but what exactly needs to be changed/removed/installed?

thank you

Cluster information:

Kubernetes version: v1.26.0
Cloud being used: bare-metal
Installation method: apt
Host OS: ubuntu 22.04 lts
CNI and version: 0.3.1
CRI and version: v1.6.15

errors from the pod:

Curl error (6): Couldn’t resolve host name for [Could not resolve host:]
:[“warning”,“elasticsearch”],“pid”:7,“message”:“Unable to revive connection:”}

thank you