[  840.597500][T15650] netdevsim netdevsim755 eni755np1: renamed from eth1
[  840.610176][T15648] netdevsim netdevsim323 eni323np1: renamed from eth0
[  841.318095][T15635] Could not find device with ifindex 2000 in netnsfd 11
[  841.319220][T15635] Could not find netns with fd: 2000
[  841.319687][T15635] Cannot link a netdevsim to itself
[  841.320190][T15635] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).