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Automatic merge from submit-queue Fixed merging of host's and dns' search lines Fixed forming of pod's Search line in resolv.conf: - exclude duplicates while merging of host's and dns' search lines to form pod's one - truncate pod's search line if it exceeds resolver limits: is > 255 chars and containes > 6 searches - monitoring the resolv.conf file which is used by kubelet (set thru --resolv-conf="") and logging and eventing if search line in it consists of more than 3 entries (or 6 if Cluster Domain is set) or its lenght is > 255 chars - logging and eventing when a pod's search line is > 255 chars or containes > 6 searches during forming Fixes #29270 **Release note**: ```release-note Fixed forming resolver search line for pods: exclude duplicates, obey libc limitations, logging and eventing appropriately. ```