Comment 24 for bug 1681909

This is a mock reproducer of this issue by faking a 20s delay in virtio-net after its link is up.

To enable that, user needs to build virtio-net with the hereby attached patch, and insert:

"echo 1 > /sys/module/virtio_net/parameters/droppkt"

in the /usr/sbin/kdump-config before the network dump procedure.

It'll introduce a 20s delay in packet transmission, causing the issue reported in this LP to be reproduced.
This patch was developed in Bionioc 4.15.x kernel.