[  493.003427] netdevsim netdevsim435 eni435np1: renamed from eth0
[  493.100588] netdevsim netdevsim538 eni538np1: renamed from eth1
[  493.309845] Could not find device with ifindex 2000 in netnsfd 11
[  493.310170] Could not find netns with fd: 2000
[  493.310260] Cannot link a netdevsim to itself
[  493.310364] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).