[  473.771832] netdevsim netdevsim277 eni277np1: renamed from eth0
[  473.772410] netdevsim netdevsim639 eni639np1: renamed from eth1
[  473.844720] Could not find device with ifindex 2000 in netnsfd 11
[  473.844810] Could not find netns with fd: 2000
[  473.844852] Cannot link a netdevsim to itself
[  473.844903] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).