[  510.458772] netdevsim netdevsim516 eni516np1: renamed from eth1
[  510.556800] netdevsim netdevsim455 eni455np1: renamed from eth0
[  510.758745] Could not find device with ifindex 2000 in netnsfd 11
[  510.758951] Could not find netns with fd: 2000
[  510.759038] Cannot link a netdevsim to itself
[  510.759134] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).