[  487.955564] netdevsim netdevsim437 eni437np1: renamed from eth0
[  487.956118] netdevsim netdevsim681 eni681np1: renamed from eth1
[  488.051717] Could not find device with ifindex 2000 in netnsfd 11
[  488.051812] Could not find netns with fd: 2000
[  488.051855] Cannot link a netdevsim to itself
[  488.051905] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).