$ netstat
Active Internet connections
Proto Recv-Q Send-Q Local Address Foreign Address (state)
udp4 0 0 localhost.domain *.* dnscacheさん
udp4 0 0 206.223.151.206.domain *.* dnscachexさん
udp4 6571 0 cobra2245.domain *.* rbldnsさん

Recv-Qが、、、