Public bug reported:

With 5.15.0-58.64-generic, bridge networking on xen is broken :

 no packet (check with tcpdump)  flowing between dom0 and any domUs attached to 
a network bridge.
 downgrading to  5.15.0-57-generic fix the issue. Thus the patch to the netback 
driver seems the cause.

relevant network config :

brtctl show :
br0             8000.XXXXXXXXXXX        no              eno1
                                                        vif1.0

relevant domU config :

kernel = '/usr/lib/grub-xen/grub-i386-xen_pvh.bin'
type = 'pvh'

vif         = [ 'ip=192.168.10.10 ,bridge=br0' ]

No message in dmesg, journal, xen logs..

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2022-3643

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https://bugs.launchpad.net/bugs/2002889

Title:
  5.15.0-58.64 breaks xen bridge networking (pvh domU)

Status in linux package in Ubuntu:
  New

Bug description:
  With 5.15.0-58.64-generic, bridge networking on xen is broken :

   no packet (check with tcpdump)  flowing between dom0 and any domUs attached 
to a network bridge.
   downgrading to  5.15.0-57-generic fix the issue. Thus the patch to the 
netback driver seems the cause.

  relevant network config :

  brtctl show :
  br0           8000.XXXXXXXXXXX        no              eno1
                                                        vif1.0

  relevant domU config :

  kernel = '/usr/lib/grub-xen/grub-i386-xen_pvh.bin'
  type = 'pvh'

  vif         = [ 'ip=192.168.10.10 ,bridge=br0' ]

  No message in dmesg, journal, xen logs..

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