route: Don't change them when exiting with persistence.

If an interface stops, it might affect the routing priority.
When dhcpcd is exiting we want to avoid this behaviour to keep
the system running as best as.

diff --git a/src/route.c b/src/route.c
index 57f9b187935765783f6e2e969b6866ac5ea52358..a31c4f730e09c62d7c6c716e53dac2fda7b8e40d 100644 (file)
--- a/src/route.c
+++ b/src/route.c
@@ -758,6 +758,12 @@ rt_build(struct dhcpcd_ctx *ctx, int af)
        struct rt *rt, *rtn;
        unsigned long long o;
 
+       /* When exiting with persistence, don't change any routing
+        * which maybe affected by interfaces stopping. */
+       if ((ctx->options & (DHCPCD_EXITING | DHCPCD_PERSISTENT)) ==
+           (DHCPCD_EXITING | DHCPCD_PERSISTENT))
+               return;
+
        rb_tree_init(&routes, &rt_compare_proto_ops);
        rb_tree_init(&added, &rt_compare_os_ops);
        rb_tree_init(&kroutes, &rt_compare_os_ops);