[  523.903752] netdevsim netdevsim440 eni440np1: renamed from eth0
[  524.000359] netdevsim netdevsim541 eni541np1: renamed from eth1
[  524.240952] Could not find device with ifindex 2000 in netnsfd 11
[  524.241114] Could not find netns with fd: 2000
[  524.241207] Cannot link a netdevsim to itself
[  524.241300] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).