[  762.456065][T14647] netdevsim netdevsim281 eni281np1: renamed from eth0
[  762.473069][T14649] netdevsim netdevsim621 eni621np1: renamed from eth1
[  763.034508][T14635] Could not find device with ifindex 2000 in netnsfd 11
[  763.035113][T14635] Could not find netns with fd: 2000
[  763.035496][T14635] Cannot link a netdevsim to itself
[  763.036164][T14635] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).