From 12c96a64a4b7ab75cb0e4a7dfde8960c4391b2a8 Mon Sep 17 00:00:00 2001
From: Bernhard Reutner-Fischer
Date: Wed, 11 Apr 2007 16:23:57 +0000
Subject: - set the scope properly. Thanks to Jean Wolter, who wrote: busybox
ip and the original ip utility behave differently when setting the following
route (verified with ip route show using the original ip utility):
ip route add 10.0.0.138 dev eth0
Result for busybox ip:
# ip route add 10.0.0.138 dev eth0
# /usr/local/bin/ip route show
10.0.0.138 dev eth0
Result for ip:
# /usr/local/bin/ip route add 10.0.0.138 dev eth0
# /usr/local/bin/ip route show
10.0.0.138 dev eth0 scope link
A following "ip route add default via 10.0.0.138" fails for busybox
ip, since the kernel can not find a route to 10.0.0.138 (it replies
with Network is unreachable).
The reasons seems to be that the original ip utility explicitly sets
the scope after parsing all parameters. This is missing in busybox,
the attached patch fixes this. I took this from the original iproute
sources and removed some variables, which are not needed for busybox.
---
networking/libiproute/iproute.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
(limited to 'networking')
diff --git a/networking/libiproute/iproute.c b/networking/libiproute/iproute.c
index bb0bfae..a19586c 100644
--- a/networking/libiproute/iproute.c
+++ b/networking/libiproute/iproute.c
@@ -434,6 +434,18 @@ static int iproute_modify(int cmd, unsigned flags, int argc, char **argv)
}
addattr_l(&req.n, sizeof(req), RTA_METRICS, RTA_DATA(mxrta), RTA_PAYLOAD(mxrta));
}
+ if (req.r.rtm_type == RTN_LOCAL || req.r.rtm_type == RTN_NAT)
+ req.r.rtm_scope = RT_SCOPE_HOST;
+ else if (req.r.rtm_type == RTN_BROADCAST ||
+ req.r.rtm_type == RTN_MULTICAST ||
+ req.r.rtm_type == RTN_ANYCAST)
+ req.r.rtm_scope = RT_SCOPE_LINK;
+ else if (req.r.rtm_type == RTN_UNICAST || req.r.rtm_type == RTN_UNSPEC) {
+ if (cmd == RTM_DELROUTE)
+ req.r.rtm_scope = RT_SCOPE_NOWHERE;
+ else if (!gw_ok)
+ req.r.rtm_scope = RT_SCOPE_LINK;
+ }
if (req.r.rtm_family == AF_UNSPEC) {
req.r.rtm_family = AF_INET;
--
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