[  506.570294] netdevsim netdevsim632 eni632np1: renamed from eth1
[  506.668897] netdevsim netdevsim493 eni493np1: renamed from eth0
[  506.846048] Could not find device with ifindex 2000 in netnsfd 11
[  506.846251] Could not find netns with fd: 2000
[  506.846352] Cannot link a netdevsim to itself
[  506.846469] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).