From 9de1fcdf36e7e00693a260865a5f2a58af1c7040 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 28 Apr 2020 00:01:46 +0200 Subject: [PATCH] docs: networking: convert ip_dynaddr.txt to ReST - add SPDX header; - adjust title markup; - mark code blocks and literals as such; - adjust identation, whitespaces and blank lines; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab Signed-off-by: David S. Miller --- Documentation/networking/index.rst | 1 + .../networking/{ip_dynaddr.txt => ip_dynaddr.rst} | 29 +++++++++++++++------- 2 files changed, 21 insertions(+), 9 deletions(-) rename Documentation/networking/{ip_dynaddr.txt => ip_dynaddr.rst} (65%) diff --git a/Documentation/networking/index.rst b/Documentation/networking/index.rst index cf85d0a..f81aeb8 100644 --- a/Documentation/networking/index.rst +++ b/Documentation/networking/index.rst @@ -66,6 +66,7 @@ Contents: hinic ila ipddp + ip_dynaddr .. only:: subproject and html diff --git a/Documentation/networking/ip_dynaddr.txt b/Documentation/networking/ip_dynaddr.rst similarity index 65% rename from Documentation/networking/ip_dynaddr.txt rename to Documentation/networking/ip_dynaddr.rst index 45f3c12..eacc0c7 100644 --- a/Documentation/networking/ip_dynaddr.txt +++ b/Documentation/networking/ip_dynaddr.rst @@ -1,10 +1,15 @@ +.. SPDX-License-Identifier: GPL-2.0 + +================================== IP dynamic address hack-port v0.03 -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +================================== + This stuff allows diald ONESHOT connections to get established by dynamically changing packet source address (and socket's if local procs). It is implemented for TCP diald-box connections(1) and IP_MASQuerading(2). -If enabled[*] and forwarding interface has changed: +If enabled\ [#]_ and forwarding interface has changed: + 1) Socket (and packet) source address is rewritten ON RETRANSMISSIONS while in SYN_SENT state (diald-box processes). 2) Out-bounded MASQueraded source address changes ON OUTPUT (when @@ -12,18 +17,24 @@ If enabled[*] and forwarding interface has changed: received by the tunnel. This is specially helpful for auto dialup links (diald), where the -``actual'' outgoing address is unknown at the moment the link is +``actual`` outgoing address is unknown at the moment the link is going up. So, the *same* (local AND masqueraded) connections requests that bring the link up will be able to get established. -[*] At boot, by default no address rewriting is attempted. - To enable: +.. [#] At boot, by default no address rewriting is attempted. + + To enable:: + # echo 1 > /proc/sys/net/ipv4/ip_dynaddr - To enable verbose mode: - # echo 2 > /proc/sys/net/ipv4/ip_dynaddr - To disable (default) + + To enable verbose mode:: + + # echo 2 > /proc/sys/net/ipv4/ip_dynaddr + + To disable (default):: + # echo 0 > /proc/sys/net/ipv4/ip_dynaddr Enjoy! --- Juanjo +Juanjo -- 2.7.4