Openwrt/package/network/services/ppp/patches/340-populate_default_gateway.patch
Hauke Mehrtens 030bc39c35 ppp: Update to version 2.4.9
Upstream integrated multiple patches from Distributions and did other
changes:
* rp-pppoe.so was renamed to pppoe.so
* Converted to ANSI C

The following patches were applied upstream:
* 100-debian_ip-ip_option.patch
* 101-debian_close_dev_ppp.patch
* 103-debian_fix_link_pidfile.patch
* 106-debian_stripMSdomain.patch
* 107-debian_pppoatm_wildcard.patch
* 110-debian_defaultroute.patch
* 202-no_strip.patch

Compilation with musl libc was fixed upstream so
140-pppoe_compile_fix.patch is not needed any more

Parts of the 203-opt_flags.patch patch were applied in a different way
upstream.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2021-02-24 00:30:20 +01:00

35 lines
1.1 KiB
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 <jo@mein.io>
--- a/pppd/sys-linux.c
+++ b/pppd/sys-linux.c
@@ -1720,6 +1720,9 @@ 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;
rt.rt_metric = dfl_route_metric + 1; /* +1 for binary compatibility */
@@ -1728,7 +1731,7 @@ 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");