dhclient我在 Debian ( isc-dhcp-client, ) 上使用isc-dhcp-common。
正在记录的日志dhclient充斥着版权信息和其他无用的东西（“请查阅自述文件”，“请访问 http://...”）
简单的dhcp会话如下所示：
dhclient: Internet Systems Consortium DHCP Client 4.2.2
dhclient: Copyright 2004-2011 Internet Systems Consortium.
dhclient: All rights reserved.
dhclient: For info, please visit https://www.isc.org/software/dhcp/
dhclient:
dhclient: Listening on LPF/wlan0/aa:bb:cc:dd:ee:ff
dhclient: Sending on LPF/wlan0/aa:bb:cc:dd:ee:ff
dhclient: Sending on Socket/fallback
dhclient: DHCPRELEASE on wlan0 to 192.168.0.1 port 67
dhclient: send_packet: Network is unreachable
dhclient: send_packet: please consult README file regarding broadcast address.
dhclient: Internet Systems Consortium DHCP Client 4.2.2
dhclient: Copyright 2004-2011 Internet Systems Consortium.
dhclient: All rights reserved.
dhclient: For info, please visit https://www.isc.org/software/dhcp/
dhclient:
dhclient: Listening on LPF/wlan0/aa:bb:cc:dd:ee:ff
dhclient: Sending on LPF/wlan0/aa:bb:cc:dd:ee:ff
dhclient: Sending on Socket/fallback
dhclient: DHCPRELEASE on wlan0 to 192.168.0.1 port 67
dhclient: send_packet: Network is unreachable
dhclient: send_packet: please consult README file regarding broadcast address.
dhclient: Internet Systems Consortium DHCP Client 4.2.2
dhclient: Copyright 2004-2011 Internet Systems Consortium.
dhclient: All rights reserved.
dhclient: For info, please visit https://www.isc.org/software/dhcp/
dhclient:
dhclient: Listening on LPF/wlan0/aa:bb:cc:dd:ee:ff
dhclient: Sending on LPF/wlan0/aa:bb:cc:dd:ee:ff
dhclient: Sending on Socket/fallback
dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7
dhclient: DHCPREQUEST on wlan0 to 255.255.255.255 port 67
dhclient: DHCPOFFER from 192.168.0.1
dhclient: DHCPACK from 192.168.0.1
dhclient: bound to 192.168.0.16 -- renewal in 36865 seconds.
重要的信息混杂着垃圾。这对我来说是一个问题，因为我正在转发重要的日志（包括dhclient），并将它们显示在后台。由于dhclient经常更新租约，日志很快就会变得很长。然后我必须向上滚动才能看到其他日志。
是否可以隐藏垃圾，只保留相关信息？