[  871.079686][T14761] netdevsim netdevsim507 eni507np1: renamed from eth0
[  871.092181][T14763] netdevsim netdevsim754 eni754np1: renamed from eth1
[  871.769225][T14749] Could not find device with ifindex 2000 in netnsfd 11
[  871.770023][T14749] Could not find netns with fd: 2000
[  871.770413][T14749] Cannot link a netdevsim to itself
[  871.770848][T14749] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).