xen:
version                : #62-Ubuntu SMP Tue Nov 22 19:54:14 UTC 2022
machine                : x86_64
Ubuntu 22.04.1 LTS

Update kernel from 5.15.0-56-generic to 5.15.0-60-generic = paravirtual vms in 
bridge dont see athers
return kernel to 5.15.0-60-generic = all vm ok

guest vm Ubuntu 20.04.5 LTS kernel update from 5.4.0-133-generic to 
5.4.0-139-generic = network not working
guest vm return kernel 5.4.0-133-generic = works fine


# brctl show
bridge name     bridge id               STP enabled     interfaces
br0             8000.c684fea1dd70       yes             eno1
                                                        vif1.0

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-meta in Ubuntu.
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

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-meta/+bug/2002834/+subscriptions


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