[  768.735240][T14762] netdevsim netdevsim501 eni501np1: renamed from eth0
[  768.745437][T14764] netdevsim netdevsim538 eni538np1: renamed from eth1
[  769.324356][T14750] Could not find device with ifindex 2000 in netnsfd 11
[  769.324884][T14750] Could not find netns with fd: 2000
[  769.325233][T14750] Cannot link a netdevsim to itself
[  769.325658][T14750] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).