man ip-link: Add notice about local netns devices

Added some clarification why 'ip link set netns' can not
change network namespace for some kind of devices.

Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
This commit is contained in:
Vadim Kochan 2015-02-25 15:46:22 +02:00 committed by Stephen Hemminger
parent 32caee9fc7
commit 36324eba37
1 changed files with 22 additions and 7 deletions

View File

@ -662,14 +662,29 @@ the interface is
.IR "POINTOPOINT" .
.TP
.BI netns " PID"
move the device to the network namespace associated with the process
.IR "PID".
.TP
.BI netns " NETNSNAME"
.BI netns " NETNSNAME " \fR| " PID"
move the device to the network namespace associated with name
.IR "NETNSNAME".
.IR "NETNSNAME " or
.RI process " PID".
Some devices are not allowed to change network namespace: loopback, bridge,
ppp, wireless. These are network namespace local devices. In such case
.B ip
tool will return "Invalid argument" error. It is possible to find out if device is local
to a single network namespace by checking
.B netns-local
flag in the output of the
.BR ethtool ":"
.in +8
.B ethtool -k
.I DEVICE
.in -8
To change network namespace for wireless devices the
.B iw
tool can be used. But it allows to change network namespace only for physical devices and by process
.IR PID .
.TP
.BI alias " NAME"