[  513.784436] netdevsim netdevsim544 eni544np1: renamed from eth1
[  513.881524] netdevsim netdevsim456 eni456np1: renamed from eth0
[  514.134082] Could not find device with ifindex 2000 in netnsfd 11
[  514.134286] Could not find netns with fd: 2000
[  514.134384] Cannot link a netdevsim to itself
[  514.134510] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).