Enable net.ipv4.conf.$iface.promote_secondaries on Linux so that

we keep the subnet when changing addresses on the same subnet.

1 files changed, 2 insertions, 0 deletions

diff --git a/net.h b/net.h
index d1e9c066..4f92f0a7 100644
--- a/net.h
+++ b/net.h
@@ -105,6 +105,8 @@ int inet_ntocidr(struct in_addr);
 int inet_cidrtoaddr(int, struct in_addr *);
 
 int up_interface(struct interface *);
+int if_init(struct interface *);
+
 int do_address(const char *,
     struct in_addr *, struct in_addr *, struct in_addr *, int);
 int if_address(const struct interface *,