X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=man%2Fsysctl.d.xml;h=db53b495998b27671662d0c31619305a6fd93670;hb=1b99214789101976d6bbf75c351279584b071998;hp=69aac8cab7a1530e371a2310d7da8176d853b125;hpb=9507fe63d91b6d3a5729cff0769f43c2e66427c6;p=elogind.git
diff --git a/man/sysctl.d.xml b/man/sysctl.d.xml
index 69aac8cab..db53b4959 100644
--- a/man/sysctl.d.xml
+++ b/man/sysctl.d.xml
@@ -68,16 +68,29 @@
The configuration files contain a list of
variable assignments, separated by newlines. Empty
lines and lines whose first non-whitespace character
- is # or ; are ignored.
-
- Note that both / and . are accepted as label
- separators within sysctl variable
- names. kernel.domainname=foo and
- kernel/domainname=foo hence are
- entirely equivalent.
+ is # or ; are
+ ignored.
+
+ Note that either / or
+ . may be used as separators within
+ sysctl variable names. If the first separator is a
+ slash, remaining slashes and dots are left intact. If
+ the first separator is a dot, dots and slashes are
+ interchanged. kernel.domainname=foo
+ and kernel/domainname=foo are
+ equivalent and will cause foo to
+ be written to
+ /proc/sys/kernel/domainname.
+ Either
+ net.ipv4.conf.enp3s0/200.forwarding
+ or
+ net/ipv4/conf/enp3s0.200/forwarding
+ may be used to refer to
+ /proc/sys/net/ipv4/conf/enp3s0.200/forwarding.
+
Each configuration file shall be named in the
- style of <program>.conf.
+ style of program.conf.
Files in /etc/ override files
with the same name in /usr/lib/
and /run/. Files in
@@ -89,18 +102,30 @@
administrator, who may use this logic to override the
configuration files installed by vendor packages. All
configuration files are sorted by their filename in
- alphabetical order, regardless in which of the
- directories they reside, to guarantee that a specific
- configuration file takes precedence over another file
- with an alphabetically earlier name, if both files
- contain the same variable setting.
+ lexicographic order, regardless of which of the
+ directories they reside in. If multiple files specify the
+ same variable name, the entry in the file with the
+ lexicographically latest name will be applied. It is
+ recommended to prefix all filenames with a two-digit
+ number and a dash, to simplify the ordering of the
+ files.
If the administrator wants to disable a
- configuration file supplied by the vendor the
+ configuration file supplied by the vendor, the
recommended way is to place a symlink to
/dev/null in
/etc/sysctl.d/ bearing the
- same file name.
+ same filename.
+
+ The settings configured with
+ sysctl.d files will be applied
+ early on boot. The network interface-specific options
+ will also be applied individually for each network
+ interface as it shows up in the system. (More
+ specifically,
+ net.ipv4.conf.*,
+ net.ipv6.conf.*,
+ net.ipv4.neigh.* and net.ipv6.neigh.*)