[  473.365723] netdevsim netdevsim451 eni451np1: renamed from eth0
[  473.366215] netdevsim netdevsim518 eni518np1: renamed from eth1
[  473.438499] Could not find device with ifindex 2000 in netnsfd 11
[  473.438579] Could not find netns with fd: 2000
[  473.438630] Cannot link a netdevsim to itself
[  473.438680] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).