[  521.970773] netdevsim netdevsim749 eni749np1: renamed from eth1
[  522.069014] netdevsim netdevsim370 eni370np1: renamed from eth0
[  522.295225] Could not find device with ifindex 2000 in netnsfd 11
[  522.295413] Could not find netns with fd: 2000
[  522.295494] Cannot link a netdevsim to itself
[  522.295585] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).