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openwrt-xburst/package/ppp/patches/330-retain_foreign_default_routes.patch
jow 5cae7371a7 [package] ppp: annotate most patches with description and S-o-b
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32463 3c298f89-4303-0410-b956-a3cf2f4a3e73
2012-06-19 17:03:24 +00:00

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pppd: Retain foreign default routes on Linux
On Linux, when pppd attempts to delete its default route it does not fill
the rt_dev field of the struct rtentry used to match the system default route.
As a consequence, pppd happily deletes any default route even if it belongs
to another interface.
This patch makes pppd fill out the rt_dev field so that only own default
routes are ever matched.
Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
--- a/pppd/sys-linux.c
+++ b/pppd/sys-linux.c
@@ -1743,6 +1743,7 @@ int cifdefaultroute (int unit, u_int32_t
SIN_ADDR(rt.rt_genmask) = 0L;
}
+ rt.rt_dev = ifname;
rt.rt_flags = RTF_UP;
if (ioctl(sock_fd, SIOCDELRT, &rt) < 0 && errno != ESRCH) {
if (still_ppp()) {