Also seeing on Jammy 5.15.0.58.56 with a similar setup (xen, lacp bond,
bridges using openvswitch). Initially tried downgrading vswitch to
2.17.0 from 2.17.3 which didn't make any difference. Both versions of
vswitch are working on the original kernel 5.15.0-25 as well as
5.15.0-33.

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https://bugs.launchpad.net/bugs/2002834

Title:
  Network bridge issue after updating kernel to 5.4.0-137

Status in linux-meta package in Ubuntu:
  Confirmed

Bug description:
  Hello,

  After updating the kernel from 5.4.0-136 to 5.4.0-137 network bridge are not 
working any more.
  I can see the bridge with "ip add show" or "brctl show". Network is up and I 
can reach the full network from the host through the bridge.

  VM on the host can not reach network or host and host can not reach
  the VM through the bridge.

  We have bonded interface used in the bridge and one bridge without IP
  and one with an IP. DHCP is off on booth bridge.

  Downgrading the kernel to 5.4.136 (Ubuntu 5.4.0-136.153-generic
  5.4.218) seem to work fine.

  Thank you for your help.

  Details
  Description:  Ubuntu 20.04.5 LTS
  Release:      20.04
  Not working version => Ubuntu 5.4.0-137.154-generic 5.4.218

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