[Bug 2055483] Re: net:pmtu.sh ubuntu_kselftests_net fails vxlan test

I observed a few very similar failures with j:linux-nvidia-6.5
6.5.0-1021.22

on akis (amd64):
DEBUG| [stdout] # TEST: IPv6, bridged geneve6: PMTU exceptions [FAIL]
DEBUG| [stdout] # File size 994376 mismatches exepcted value in locally bridged vxlan test

on blanka (amd64):
DEBUG| [stdout] # TEST: IPv4, bridged vxlan4: PMTU exceptions [FAIL]
DEBUG| [stdout] # File size 1044480 mismatches exepcted value in locally bridged vxlan test

and on helo (amd64):
DEBUG| [stdout] # TEST: IPv4, bridged geneve6: PMTU exceptions - nexthop objects [FAIL]
DEBUG| [stdout] # File size 978944 mismatches exepcted value in locally bridged vxlan test

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https://bugs.launchpad.net/bugs/2055483

Title:
net:pmtu.sh ubuntu_kselftests_net fails vxlan test

Status in ubuntu-kernel-tests:
New
Status in linux package in Ubuntu:
New

Bug description:
net:pmtu.sh fails on openstack cpu2 M-lowlatency-64k
ubuntu_kselftests_net. It fails with:

DEBUG| [stdout] # TEST: IPv4, bridged geneve6: PMTU exceptions [FAIL]
DEBUG| [stdout] # File size 1001302 mismatches exepcted value in locally bridged vxlan test

I've included a file containing the console output as well.

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