[  538.858477] netdevsim netdevsim296 eni296np1: renamed from eth0
[  538.960418] netdevsim netdevsim531 eni531np1: renamed from eth1
[  539.323646] Could not find device with ifindex 2000 in netnsfd 11
[  539.323809] Could not find netns with fd: 2000
[  539.323895] Cannot link a netdevsim to itself
[  539.324012] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).