[  517.997574] netdevsim netdevsim339 eni339np1: renamed from eth0
[  518.094259] netdevsim netdevsim520 eni520np1: renamed from eth1
[  518.346092] Could not find device with ifindex 2000 in netnsfd 11
[  518.346299] Could not find netns with fd: 2000
[  518.346379] Cannot link a netdevsim to itself
[  518.346471] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).