[  472.844315] netdevsim netdevsim752 eni752np1: renamed from eth1
[  472.844714] netdevsim netdevsim420 eni420np1: renamed from eth0
[  472.914024] Could not find device with ifindex 2000 in netnsfd 11
[  472.914101] Could not find netns with fd: 2000
[  472.914141] Cannot link a netdevsim to itself
[  472.914193] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).