12-10-2008
Ifconfig output - help understanding flags 'Smart, Simplex', etc
Hi -
Trying to understand a few things from an ifconfig -a output - can't seem to find info anywhere on the net.
Specifically - looking to understand the following:
Flags=8863
Smart
Running (is this the same as UP)
Simplex
inet6
supported media: autoselect - does that imply the airport was manually selected.
Thanks
en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::221:e9ff:fed9:7ed8%en1 prefixlen 64 scopeid 0x6
inet 192.168.100.100 netmask 0xffffff00 broadcast 192.168.100.255
ether 00:21:e9:d9:7e:d8
media: autoselect status: active
supported media: autoselect
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LEARN ABOUT PHP
inet_type
inet_type(4) File Formats inet_type(4)
NAME
inet_type - default Internet protocol type
SYNOPSIS
/etc/default/inet_type
DESCRIPTION
The inet_type file defines the default IP protocol to use. Currently this file is only used by the ifconfig(1M) and netstat(1M) commands.
The inet_type file can contain a number of <variable>=<value> lines. Currently, the only variable defined is DEFAULT_IP, which can be
assigned a value of IP_VERSION4, IP_VERSION6, or BOTH.
The output displayed by the ifconfig and netstat commands can be controlled by the value of DEFAULT_IP set in inet_type file. By default,
both commands display the IPv4 and IPv6 information available on the system. The user can choose to suppress display of IPv6 information by
setting the value of DEFAULT_IP. The following shows the possible values for DEFAULT_IP and the resulting ifconfig and netstat output that
will be displayed:
IP_VERSION4 Displays only IPv4 related information. The output displayed is backward compatible with older versions of the ifconfig(1M)
and netstat(1M) commands.
IP_VERSION6 Displays both IPv4 and IPv6 related information for ifconfig and netstat.
BOTH Displays both IPv4 and IPv6 related information for ifconfig and netstat.
The command-line options to the ifconfig and netstat commands override the effect of DEFAULT_IP as set in the inet_type file. For example,
even if the value of DEFAULT_IP is IP_VERSION4, the command
example% ifconfig -a6
will display all IPv6 interfaces.
EXAMPLES
Example 1: Suppressing IPv6 Related Output
This is what the inet_type file must contain if you want to suppress IPv6 related output:
DEFAULT_IP=IP_VERSION4
SEE ALSO
ifconfig(1M), netstat(1M)
SunOS 5.10 16 Jun 1999 inet_type(4)