[Bug 1988661] Re: Having network issues on server with error: networkd-dispatcher[781]: WARNING:Unknown index 56 seen, reloading interface list systemd-udevd[455717]: ethtool: autonegotiation is unset or enabled, the speed and duplex are not writable.

[Launchpad Bug Tracker]

[Expired for systemd (Ubuntu) because there has been no activity for 60
days.]

** Changed in: systemd (Ubuntu)
       Status: Incomplete => Expired

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Title:
  Having network issues on server with error: networkd-dispatcher[781]:
  WARNING:Unknown index 56 seen, reloading interface list systemd-
  udevd[455717]: ethtool: autonegotiation is unset or enabled, the speed
  and duplex are not writable.

Status in systemd package in Ubuntu:
  Expired

Bug description:
  Hi!
  My server has this rare intermittent error - 
  networkd-dispatcher[781]: WARNING:Unknown index 56 seen, reloading interface list
  systemd-udevd[455717]: ethtool: autonegotiation is unset or enabled, the speed and duplex are not writable.

  This causes failure of network for some time. I'm using kubernetes so
  my probes start failing and pods get killed.

  Ideally this error should not be coming.

  What is the root cause of this problem?

  Ubuntu 20.04

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