[  812.489497][T14751] netdevsim netdevsim257 eni257np1: renamed from eth0
[  812.511141][T14753] netdevsim netdevsim549 eni549np1: renamed from eth1
[  813.131785][T14739] Could not find device with ifindex 2000 in netnsfd 11
[  813.132719][T14739] Could not find netns with fd: 2000
[  813.133098][T14739] Cannot link a netdevsim to itself
[  813.133683][T14739] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).