[  490.545120] netdevsim netdevsim272 eni272np1: renamed from eth0
[  490.641927] netdevsim netdevsim550 eni550np1: renamed from eth1
[  490.855616] Could not find device with ifindex 2000 in netnsfd 11
[  490.855939] Could not find netns with fd: 2000
[  490.856059] Cannot link a netdevsim to itself
[  490.856231] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).