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openwrt-xburst/package/network/services/ppp/patches/340-populate_default_gateway.patch
jow 5f021ceadf ppp:
- fix multilink ppp with custom ifnames, patch by George Kashperko <george@znau.edu.ua>
  - refresh patches

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34171 3c298f89-4303-0410-b956-a3cf2f4a3e73
2012-11-12 19:13:45 +00:00

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Diff

pppd: Fill in default gateway on Linux
On Linux, when pppd creates the default route, it does not set the peer
address as gateway, leading to a default route without gateway address.
This behaviour breaks various downstream programs which attempt to infer
the default gateway IP address from the system default route entry.
This patch addresses the issue by filling in the peer address as gateway
when generating the default route entry.
Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
--- a/pppd/sys-linux.c
+++ b/pppd/sys-linux.c
@@ -1709,6 +1709,9 @@ int sifdefaultroute (int unit, u_int32_t
memset (&rt, 0, sizeof (rt));
SET_SA_FAMILY (rt.rt_dst, AF_INET);
+ SET_SA_FAMILY(rt.rt_gateway, AF_INET);
+ SIN_ADDR(rt.rt_gateway) = gateway;
+
rt.rt_dev = ifname;
if (kernel_version > KVERSION(2,1,0)) {
@@ -1716,7 +1719,7 @@ int sifdefaultroute (int unit, u_int32_t
SIN_ADDR(rt.rt_genmask) = 0L;
}
- rt.rt_flags = RTF_UP;
+ rt.rt_flags = RTF_UP | RTF_GATEWAY;
if (ioctl(sock_fd, SIOCADDRT, &rt) < 0) {
if (!ok_error(errno))
error("default route ioctl(SIOCADDRT): %m");