[  472.963547] netdevsim netdevsim257 eni257np1: renamed from eth0
[  472.964266] netdevsim netdevsim539 eni539np1: renamed from eth0
[  473.057130] Could not find device with ifindex 2000 in netnsfd 11
[  473.057211] Could not find netns with fd: 2000
[  473.057259] Cannot link a netdevsim to itself
[  473.057312] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).