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usernetctl(8) [centos man page]

USERNETCTL(8)						      System Manager's Manual						     USERNETCTL(8)

usernetctl - allow a user to manipulate a network interface if permitted SYNOPSIS
usernetctl interface-name up|down|report DESCRIPTION
usernetctl checks to see if users are allowed to manipulate the network interface specified by interface-name, and then tries to bring the network interface up or down, if up or down was specified on the command line, or returns true or false status (respectively) if the report option was specified. usernetctl is not really meant to be called directly by users, though it currently works fine that way. It is used as a wrapper by the ifup and ifdown scripts, so that users can do exactly the same thing as root: ifup interface-name ifdown interface-name and ifup and ifdown will call usernetctl automatically to allow the interface status change. OPTIONS
interface-name The name of the network interface to check; for example, "ppp0". For backwards compatibility, "ifcfg-ppp0" and "/etc/sysconfig/net- work-scripts/ifcfg-ppp0" are also supported. up|down Attempt to bring the interface up or down. report Report on whether users can bring the interface up or down. NOTES
Alternate device configurations may inherit the default configuration's permissions. RHS
Red Hat, Inc. USERNETCTL(8)

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IFSYSCTL(5)						       Network configuration						       IFSYSCTL(5)

ifsysctl[-<interface name>] - per network interface sysctl settings SYNOPSIS
/etc/sysconfig/network/ifsysctl /etc/sysconfig/network/ifsysctl-<interface name> DESCRIPTION
These files are intended to contain sysctl settings, that should be applied when a network interface is created. This are usually interface specific settings, like: net.ipv6.conf.eth0.use_tempaddr = 1 or net.ipv4.conf.eth0.rp_filter = 0 The settings are applied by the /etc/sysconfig/network/scripts/ifup-sysctl script executed via /etc/udev/rules.d/77-network.rules rule (see udev(7)), after the creation and after the rename of the interface name to its persistent name (when applicable), but before the ifup <interface name> -o hotplug may be executed to configure the interface. The settings are not applied by default when the NetworkManager is active (NETWORKMANAGER=yes), except when the IFSYSCTL_NETWORKMANAGER=yes variable is set in the /etc/sysconfig/network/config file. Settings from the ifsysctl- file are applied every time an interface has been created. Settings from the ifsysctl-interface name file are applied when the interface with the corresponding interface name has been created. SYNTAX
The sysctl(8) utility is required to apply the settings. It supports two separator characters for sysctl keywords: a "." in default format and a "/" in the alternate format. Therefore the syntax is basically same to the /etc/sysctl.conf file. Interface names may contain a ".". In the default sysctl format using a "." as separator, that is any "." in the interface name of the key- word, has to be replaced with a "/". In the alternate sysctl format with "/" as separator, normal interface names can be used. Optionally, the ifsysctl files may contain also the $INTERFACE and the $SYSCTL_IF variables, that are automatically replaced with the cur- rent interface name usable in the alternate format and with the sysctl-quoted interface name for the default format, before the settings are passed to the sysctl utility. Note also, that settings with variables in the ifsysctl (without the -<interface name> suffix), will be applied for every interface! Further, files with variables are not compatible to the /etc/sysctl.conf file. EXAMPLES
Settings for "eth0" and "eth0.1" interfaces # using "." as separator: net.ipv6.conf.eth0.use_tempaddr = 1 net.ipv6.conf.eth0/1.use_tempaddr = 1 # using "/" as separator: net/ipv6/conf/eth0/use_tempaddr = 1 net/ipv6/conf/eth0.0/use_tempaddr = 1 Settings with variables: # using "." as separator: net.ipv6.conf.$SYSCTL_IF.use_tempaddr = 1 # using "/" as separator: net/ipv6/conf/$INTERFACE/use_tempaddr = 1 To test your ifsysctl-eth0 or ifsysctl file, use: /etc/sysconfig/network/scripts/ifup-sysctl eth0 -o debug BUGS
Please report bugs at <> AUTHOR
Marius Tomaschewski <> SEE ALSO
ifup(8) ifcfg(5) sysctl(8) sysconfig December 2009 IFSYSCTL(5)
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