Averaging 5000 ms Delay in Network Requests

[mattmattox]

What kind of request is this (question/bug/enhancement/feature request):
Bug

Steps to reproduce (least amount of steps as possible):
Kubernetes 1.14.1
Rancher 2.2.4
Using weave CNIs:

network:
options:
flannel_backend_type: "vxlan"
plugin: "weave"

Result:
ping/curl/wget hang for othe 5ish seconds but nslookup does not.

Other details that may be helpful:
Workaround:
Add the following to dnsConfig for the pod.

• single-request-reopen
• timeout: 1

This looks to be related to weaveworks/weave#3287

Environment information

• Rancher version (rancher/rancher/rancher/server image tag or shown bottom left in the UI): v2.2.4
• Installation option (single install/HA): HA

[fsdaniel]

This issue is also present in Rancher 2.2.7 while using weaveworks/weave-kube:2.5.0

[mattmattox]

After upgrading Linux 4.15.0-1043-aws to Linux 5.2.0-050200-generic. We're seeing much faster name resolutions.