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, 8 insertions, 0 deletions

diff --git a/net.c b/net.c
index b55a7108..20edd0e7 100644
--- a/net.c
+++ b/net.c
@@ -449,6 +449,14 @@ discover_interfaces(int argc, char * const *argv)
 				    "%s: unknown hardware family", p);
 			}
 		}
+
+		/* Handle any platform init for the interface */
+		if (if_init(ifp) == -1) {
+			syslog(LOG_ERR, "%s: if_init: %m", p);
+			free_interface(ifp);
+			continue;
+		}
+
 		if (ifl)
 			ifl->next = ifp; 
 		else