[  454.423109] netdevsim netdevsim612 eni612np1: renamed from eth1
[  454.423332] netdevsim netdevsim277 eni277np1: renamed from eth0
[  454.518904] Could not find device with ifindex 2000 in netnsfd 11
[  454.519064] Could not find netns with fd: 2000
[  454.519166] Cannot link a netdevsim to itself
[  454.519284] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).