ping: discard too large RTTs (fixes #314)
ping: discard too large RTTs (fixes #314)

personalunion/glimpse_client-1,MKV21/glimpse_client,HSAnet/glimpse_client,HSAnet/glimpse_client,MKV21/glimpse_client,MKV21/glimpse_client,HSAnet/glimpse_client,personalunion/glimpse_client-1,HSAnet/glimpse_client,personalunion/glimpse_client-1,HSAnet/glimpse_client,personalunion/glimpse_client-1,MKV21/glimpse_client,MKV21/glimpse_client,personalunion/glimpse_client-1