[  534.051878] netdevsim netdevsim260 eni260np1: renamed from eth0
[  534.152804] netdevsim netdevsim540 eni540np1: renamed from eth1
[  534.475891] Could not find device with ifindex 2000 in netnsfd 11
[  534.476024] Could not find netns with fd: 2000
[  534.476100] Cannot link a netdevsim to itself
[  534.476190] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).