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| author | Thomas Markwalder <tmark@isc.org> | 2019-12-09 10:47:38 -0500 |
|---|---|---|
| committer | Thomas Markwalder <tmark@isc.org> | 2019-12-09 10:47:38 -0500 |
| commit | 48148b595eecdedb1a1f4b816c4c0d15cfd62f7e (patch) | |
| tree | 734fe7c8ef809beb03dd1a600b314d8c5da694a9 | |
| parent | 83175640024277fefae5f3eb5a253bec50717976 (diff) | |
| download | isc-dhcp-48148b595eecdedb1a1f4b816c4c0d15cfd62f7e.tar.gz | |
[#28] Clarify that domain names are only resolved once
common/dhcp-options.5 - added text to ip-address value section.
| -rw-r--r-- | common/dhcp-options.5 | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/common/dhcp-options.5 b/common/dhcp-options.5 index 33d48043..6fae9805 100644 --- a/common/dhcp-options.5 +++ b/common/dhcp-options.5 @@ -1,6 +1,6 @@ .\" $Id: dhcp-options.5,v 1.50 2011/05/20 13:48:32 tomasz Exp $ .\" -.\" Copyright (c) 2004-2018 by Internet Systems Consortium, Inc. ("ISC") +.\" Copyright (c) 2004-2019 by Internet Systems Consortium, Inc. ("ISC") .\" Copyright (c) 1996-2003 by Internet Software Consortium .\" .\" Permission to use, copy, modify, and distribute this software for any @@ -53,7 +53,14 @@ The data type can be entered either as an explicit IP address (e.g., 239.254.197.10) or as a domain name (e.g., haagen.isc.org). When entering a domain name, be sure that that -domain name resolves to a single IP address. +domain name resolves to a single IP address. Additionally, please +note the software (dhcpd or dhclient) will only attempt to resolve +the domain name the first time the option is needed. For example, if +the next-server option is defined as a domain name, dhcpd will +attempt to resolve it while responding to the first client query +dhcpd receives after startup. Should the domain's address subsequently +change, the software has to be restarted in order to pick up the +change. .PP The .B ip6-address |