# where ref > 0, rtr_ref > 0, alive_cnt >= 0, state is up/down,
# last_ping >= 0, ping_sent is boolean (0/1), deadline and down_ni are
# numeric (0 or >0 or <0), router is a string like 192.168.1.1@tcp2
# where ref > 0, rtr_ref > 0, alive_cnt >= 0, state is up/down,
# last_ping >= 0, ping_sent is boolean (0/1), deadline and down_ni are
# numeric (0 or >0 or <0), router is a string like 192.168.1.1@tcp2