[  488.879364] netdevsim netdevsim662 eni662np1: renamed from eth1
[  488.976492] netdevsim netdevsim391 eni391np1: renamed from eth0
[  489.212391] Could not find device with ifindex 2000 in netnsfd 11
[  489.212674] Could not find netns with fd: 2000
[  489.212757] Cannot link a netdevsim to itself
[  489.212861] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).