[PATCH 1/2] ifup: remove deletion of ip env

Alexander Aring aar at pengutronix.de
Mon Jun 13 23:55:05 PDT 2016

This patch removes the deletion of ip env and changes to the behaviour
that it use previous ip=$TYPE assignments if ip env is not part of network
env which will be sourced.

somewhere in shell: ip=dhcp
\- in case of ip=$TYPE in network env: overwrites the ip env
\- in case of NO ip=$TYPE in network env: use the ip="dhcp" from shell

Signed-off-by: Alexander Aring <aar at pengutronix.de>
Don't know if this patch breaks to much handling with previous env handling,
but I would except such handling.

Also don't know if the example is correct or I mixed something with
global/local envs.

Maybe apply patch 2/2 only.

 net/ifup.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/net/ifup.c b/net/ifup.c
index f22afc9..17e1b2f 100644
--- a/net/ifup.c
+++ b/net/ifup.c
@@ -62,8 +62,6 @@ int ifup(const char *name, unsigned flags)
-	setenv("ip", "");
 	for (i = 0; i < ARRAY_SIZE(vars); i++)
 		setenv(vars[i], "");

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