I also see this bu only on Windows guests.
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https://bugs.launchpad.net/bugs/1423631
Title:
tap interface drops many packets on highload systems
To manage notifications
I was able to resolve this with the below udev rule:
# cat /etc/udev/rules.d/60-tap.rules
KERNEL=="tap*", RUN+="/sbin/ip link set %k txqueuelen 1"
#
I used the below to reload udev
udevadm control --reload-rules
I then used the below to apply the rules to already created interfaces:
