[  836.863331][T15811] netdevsim netdevsim270 eni270np1: renamed from eth0
[  836.877834][T15810] netdevsim netdevsim630 eni630np1: renamed from eth1
[  837.524270][T15797] Could not find device with ifindex 2000 in netnsfd 11
[  837.525001][T15797] Could not find netns with fd: 2000
[  837.525515][T15797] Cannot link a netdevsim to itself
[  837.526040][T15797] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).