[  511.269066] netdevsim netdevsim520 eni520np1: renamed from eth1
[  511.366038] netdevsim netdevsim382 eni382np1: renamed from eth0
[  511.604170] Could not find device with ifindex 2000 in netnsfd 11
[  511.604317] Could not find netns with fd: 2000
[  511.604388] Cannot link a netdevsim to itself
[  511.604473] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).