[  489.957811] netdevsim netdevsim493 eni493np1: renamed from eth0
[  490.058598] netdevsim netdevsim639 eni639np1: renamed from eth1
[  490.415852] Could not find device with ifindex 2000 in netnsfd 11
[  490.416029] Could not find netns with fd: 2000
[  490.416138] Cannot link a netdevsim to itself
[  490.416245] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).