[  482.268160] netdevsim netdevsim539 eni539np1: renamed from eth1
[  482.369467] netdevsim netdevsim399 eni399np1: renamed from eth0
[  482.732017] Could not find device with ifindex 2000 in netnsfd 11
[  482.732194] Could not find netns with fd: 2000
[  482.732279] Cannot link a netdevsim to itself
[  482.732392] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).