net: add diagnostic to try to catch selfConnect bug earlier TBR=dsymonds
net: add diagnostic to try to catch selfConnect bug earlier
TBR=dsymonds

R=golang-dev
CC=golang-dev
http://codereview.appspot.com/5683057

h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang