[  487.163170] netdevsim netdevsim303 eni303np1: renamed from eth0
[  487.264396] netdevsim netdevsim607 eni607np1: renamed from eth1
[  487.582398] Could not find device with ifindex 2000 in netnsfd 11
[  487.582527] Could not find netns with fd: 2000
[  487.582590] Cannot link a netdevsim to itself
[  487.582690] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).