[  509.937844] netdevsim netdevsim634 eni634np1: renamed from eth1
[  510.034016] netdevsim netdevsim334 eni334np1: renamed from eth0
[  510.272340] Could not find device with ifindex 2000 in netnsfd 11
[  510.272632] Could not find netns with fd: 2000
[  510.272741] Cannot link a netdevsim to itself
[  510.272868] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).