[  488.234377] netdevsim netdevsim534 eni534np1: renamed from eth1
[  488.331477] netdevsim netdevsim274 eni274np1: renamed from eth0
[  488.582060] Could not find device with ifindex 2000 in netnsfd 11
[  488.582379] Could not find netns with fd: 2000
[  488.582463] Cannot link a netdevsim to itself
[  488.582559] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).