[  487.839931] netdevsim netdevsim504 eni504np1: renamed from eth0
[  487.935950] netdevsim netdevsim522 eni522np1: renamed from eth1
[  488.171347] Could not find device with ifindex 2000 in netnsfd 11
[  488.171658] Could not find netns with fd: 2000
[  488.171762] Cannot link a netdevsim to itself
[  488.171878] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).