[  473.350901] netdevsim netdevsim257 eni257np1: renamed from eth0
[  473.351192] netdevsim netdevsim734 eni734np1: renamed from eth1
[  473.428410] Could not find device with ifindex 2000 in netnsfd 11
[  473.428504] Could not find netns with fd: 2000
[  473.428557] Cannot link a netdevsim to itself
[  473.428606] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).