[  524.305372] netdevsim netdevsim663 eni663np1: renamed from eth1
[  524.402153] netdevsim netdevsim431 eni431np1: renamed from eth0
[  524.636763] Could not find device with ifindex 2000 in netnsfd 11
[  524.636964] Could not find netns with fd: 2000
[  524.637063] Cannot link a netdevsim to itself
[  524.637200] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).