[  768.353105][T14752] netdevsim netdevsim337 eni337np1: renamed from eth0
[  768.375519][T14753] netdevsim netdevsim729 eni729np1: renamed from eth1
[  768.981544][T14740] Could not find device with ifindex 2000 in netnsfd 11
[  768.982127][T14740] Could not find netns with fd: 2000
[  768.982505][T14740] Cannot link a netdevsim to itself
[  768.982941][T14740] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).