Checkign in new iproute2

[iproute2.git] / doc / ip-cref.tex

diff --git a/doc/ip-cref.tex b/doc/ip-cref.tex
index 5eaa4a8..bb4eb78 100644 (file)
--- a/doc/ip-cref.tex
+++ b/doc/ip-cref.tex
@@ -294,13 +294,17 @@ broadcast address will break networking.
 Do not use it, if you do not understand what this operation really does.
 \end{NB}
 
+\item \verb|netns PID|
+
+--- move the device to the network namespace associated with the process PID.
+
 \end{itemize}
 
 \vskip 1mm
 \begin{NB}
-The {\tt ip} utility does not change the \verb|PROMISC| 
-or \verb|ALLMULTI| flags. These flags are considered
-obsolete and should not be changed administratively.
+The \verb|PROMISC| and \verb|ALLMULTI| flags are considered
+obsolete and should not be changed administratively, though
+the {\tt ip} utility will allow that.
 \end{NB}
 
 \paragraph{Warning:} If multiple parameter changes are requested,
@@ -450,13 +454,6 @@ or not implemented (\verb|DEBUG|) or specific to some devices
 (\verb|MASTER|, \verb|AUTOMEDIA| and \verb|PORTSEL|). We do not discuss
 them here.
 \end{NB}
-\begin{NB}
-The values of \verb|PROMISC| and \verb|ALLMULTI| flags
-shown by the \verb|ifconfig| utility and by the \verb|ip| utility
-are {\em different\/}. \verb|ip link ls| shows the true device state,
-while \verb|ifconfig| shows the virtual state which was set with
-\verb|ifconfig| itself.
-\end{NB}
 
 
 The second line contains information on the link layer addresses
@@ -758,6 +755,11 @@ An IP address becomes secondary if another address with the same
 prefix bits already exists. The first address is primary.
 It is the leader of the group of all secondary addresses. When the leader
 is deleted, all secondaries are purged too.
+There is a tweak in \verb|/proc/sys/net/ipv4/conf/<dev>/promote_secondaries|
+which activate secondaries promotion when a primary is deleted.
+To permanently enable this feature on all devices add
+\verb|net.ipv4.conf.all.promote_secondaries=1| to \verb|/etc/sysctl.conf|.
+This tweak is available in linux 2.6.15 and later.
 
 
 \item \verb|dynamic|