package/network/services/ppp/patches/330-retain_foreign_default_routes.patch

   1 pppd: Retain foreign default routes on Linux
   2
   3 On Linux, when pppd attempts to delete its default route it does not fill
   4 the rt_dev field of the struct rtentry used to match the system default route.
   5 As a consequence, pppd happily deletes any default route even if it belongs
   6 to another interface.
   7
   8 This patch makes pppd fill out the rt_dev field so that only own default
   9 routes are ever matched.
  10
  11 Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
  12
  13 --- a/pppd/sys-linux.c
  14 +++ b/pppd/sys-linux.c
  15 @@ -1743,6 +1743,7 @@ int cifdefaultroute (int unit, u_int32_t
  16         SIN_ADDR(rt.rt_genmask) = 0L;
  17      }
  18
  19 +    rt.rt_dev = ifname;
  20      rt.rt_flags = RTF_UP;
  21      if (ioctl(sock_fd, SIOCDELRT, &rt) < 0 && errno != ESRCH) {
  22         if (still_ppp()) {