Thanks. I have tried append prepend and supersede option. They are ok for ipv4 name server. But It doesn’t work for ipv6 name server.
Zhengyu 2019年12月19日 下午6:16，Philippe Maechler <pmaechler...@glattnet.ch<mailto:pmaechler...@glattnet.ch>> 写道： Hi Zhengyu Pan Have you tried to put this nameserver address in dhclient.conf? From man dhclient.conf append { [option declaration] [, ... option declaration] } If for some set of options the client should first use the values supplied by the server, if any, and then use values you supply, these values can be defined in the append statement. The append statement can only be used for options which allow more than one value to be given. This restriction is not enforced - if you ignore it, the behaviour will be unpredictable. I haven’t use the ap- or prepend options, but the supersede option work like a charm (at least on FreeBSD) /BR Philippe From: bind-users <bind-users-boun...@lists.isc.org<mailto:bind-users-boun...@lists.isc.org>> On Behalf Of Zhengyu Pan(???????????????) Sent: Thursday, December 19, 2019 10:01 AM To: bind-users@lists.isc.org<mailto:bind-users@lists.isc.org> Subject: dhclient hook not overwritten /etc/resolv.conf Hi, My OS is Centos7. I add a bash script dns.sh in /etc/dhcp/dhclient-exit-hooks.d . The script content is #!/bin/bash echo “nameserver 1.1.1.1” >> /etc/resolv.conf I want to append a nameserver in /etc/resove.conf. However, when I restart network. /etc/resove.conf not changed. /etc/resove.conf.save append this line. Why happens that? How can I append a nameserver in /etc/resove.conf? Zhengyu Best Wishes 如果您错误接收了该邮件，请通过电子邮件立即通知我们。请回复邮件到 hqs-s...@chinaunicom.cn，即可以退订此邮件。我们将立即将您的信息从我们的发送目录中删除<mailto:hqs-s...@chinaunicom.cn%EF%BC%8C%E5%8D%B3%E5%8F%AF%E4%BB%A5%E9%80%80%E8%AE%A2%E6%AD%A4%E9%82%AE%E4%BB%B6%E3%80%82%E6%88%91%E4%BB%AC%E5%B0%86%E7%AB%8B%E5%8D%B3%E5%B0%86%E6%82%A8%E7%9A%84%E4%BF%A1%E6%81%AF%E4%BB%8E%E6%88%91%E4%BB%AC%E7%9A%84%E5%8F%91%E9%80%81%E7%9B%AE%E5%BD%95%E4%B8%AD%E5%88%A0%E9%99%A4>。 If you have received this email in error please notify us immediately by e-mail. Please reply to hqs-s...@chinaunicom.cn<mailto:hqs-s...@chinaunicom.cn> ,you can unsubscribe from this mail. We will immediately remove your information from send catalogue of our. 如果您错误接收了该邮件，请通过电子邮件立即通知我们。请回复邮件到 hqs-s...@chinaunicom.cn，即可以退订此邮件。我们将立即将您的信息从我们的发送目录中删除。 If you have received this email in error please notify us immediately by e-mail. Please reply to hqs-s...@chinaunicom.cn ,you can unsubscribe from this mail. We will immediately remove your information from send catalogue of our.
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