[  486.363466] netdevsim netdevsim423 eni423np1: renamed from eth0
[  486.366601] netdevsim netdevsim527 eni527np1: renamed from eth1
[  486.455375] Could not find device with ifindex 2000 in netnsfd 11
[  486.455473] Could not find netns with fd: 2000
[  486.455524] Cannot link a netdevsim to itself
[  486.455591] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).