fix IP address stringify (again)
fix IP address stringify (again)

devnexen/h2o,devnexen/h2o,devnexen/h2o,h2o/h2o,cwyang/h2o,cwyang/h2o,cwyang/h2o,yannick/h2o,yannick/h2o,cwyang/h2o,yannick/h2o,h2o/h2o,devnexen/h2o,cwyang/h2o,h2o/h2o,h2o/h2o,devnexen/h2o,h2o/h2o,yannick/h2o,yannick/h2o,h2o/h2o,cwyang/h2o,h2o/h2o,yannick/h2o,h2o/h2o,cwyang/h2o,devnexen/h2o,yannick/h2o,yannick/h2o,cwyang/h2o,h2o/h2o,devnexen/h2o,devnexen/h2o,yannick/h2o,devnexen/h2o