[  513.812814] netdevsim netdevsim629 eni629np1: renamed from eth1
[  513.911076] netdevsim netdevsim348 eni348np1: renamed from eth0
[  514.151878] Could not find device with ifindex 2000 in netnsfd 11
[  514.152101] Could not find netns with fd: 2000
[  514.152207] Cannot link a netdevsim to itself
[  514.152335] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).