[  521.605997] netdevsim netdevsim503 eni503np1: renamed from eth0
[  521.702838] netdevsim netdevsim695 eni695np1: renamed from eth1
[  521.954683] Could not find device with ifindex 2000 in netnsfd 11
[  521.954914] Could not find netns with fd: 2000
[  521.955016] Cannot link a netdevsim to itself
[  521.955119] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).