[  520.235398] netdevsim netdevsim334 eni334np1: renamed from eth0
[  520.332237] netdevsim netdevsim741 eni741np1: renamed from eth1
[  520.545439] Could not find device with ifindex 2000 in netnsfd 11
[  520.545668] Could not find netns with fd: 2000
[  520.545787] Cannot link a netdevsim to itself
[  520.545926] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).