[  485.670440] netdevsim netdevsim420 eni420np1: renamed from eth0
[  485.772146] netdevsim netdevsim535 eni535np1: renamed from eth1
[  486.111423] Could not find device with ifindex 2000 in netnsfd 11
[  486.111581] Could not find netns with fd: 2000
[  486.111677] Cannot link a netdevsim to itself
[  486.111779] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).