1 files changed, 34 insertions, 0 deletions
diff --git a/package/network/services/ppp/patches/340-populate_default_gateway.patch b/package/network/services/ppp/patches/340-populate_default_gateway.patch
new file mode 100644
index 0000000..a1451de
--- /dev/null
+++ b/package/network/services/ppp/patches/340-populate_default_gateway.patch
@@ -0,0 +1,34 @@
+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
+@@ -1710,6 +1710,9 @@ 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)) {
+@@ -1717,7 +1720,7 @@ 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");