[  473.687033] netdevsim netdevsim403 eni403np1: renamed from eth0
[  473.688468] netdevsim netdevsim618 eni618np1: renamed from eth0
[  473.773894] Could not find device with ifindex 2000 in netnsfd 11
[  473.773983] Could not find netns with fd: 2000
[  473.774027] Cannot link a netdevsim to itself
[  473.774082] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).