add note about secondary interface
add note about secondary interface

add note about secondary interface
jwebs1/PublicKB,jtowns3/PublicKB,anthonyvetter/PublicKB,robcaldwell/PublicKB,DLM1/PublicKB,mfar78/PublicKB,daveshac/PublicKB,robertlesieur/PublicKB,StephanieWong/PublicKB,ack/PublicKB,jwcolbert/PublicKB