[  490.172683] netdevsim netdevsim720 eni720np1: renamed from eth1
[  490.173039] netdevsim netdevsim475 eni475np1: renamed from eth0
[  490.253547] Could not find device with ifindex 2000 in netnsfd 11
[  490.253640] Could not find netns with fd: 2000
[  490.253683] Cannot link a netdevsim to itself
[  490.253733] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).