I'm running lustre 2.4.3 on rhel6. I have 16 infiniband ipoib nids setup on my lustre servers. the networking seems to work fine. however, when i remove the nids using 'lctl net unconfigure' it seems to take 20-22 seconds to remove each one. there are no errors showing and the command works just fine, i'm just curious why it's taking so long. there are no other modules loaded, commands i ran are as follows modprobe lnet lctl net configure lctl net up do some lctl pings lctl net down lctl net unconfigure lustre_rmmod the unconfigure step seems to take 20-22 secs per nid, everything else is quick any thoughts? thanks - michael