This patch does the following:

    - Allow loopback route to be installed for address assigned to
      interface of IFF_POINTOPOINT type.
    - Install loopback route for an IPv4 interface addreess when the
      "useloopback" sysctl variable is enabled. Similarly, install
      loopback route for an IPv6 interface address when the sysctl variable
      "nd6_useloopback" is enabled. Deleting loopback routes for interface
      addresses is unconditional in case these sysctl variables were
      disabled after an interface address has been assigned.

Reviewed by:	bz
Approved by:	re

1 files changed, 2 insertions, 0 deletions

diff --git a/sys/net/if_var.h b/sys/net/if_var.h
index 33349fc..428645f 100644
--- a/sys/net/if_var.h
+++ b/sys/net/if_var.h
@@ -784,11 +784,13 @@ VNET_DECLARE(struct ifnethead, ifnet);
 VNET_DECLARE(struct ifgrouphead, ifg_head);
 VNET_DECLARE(int, if_index);
 VNET_DECLARE(struct ifnet *, loif);	/* first loopback interface */
+VNET_DECLARE(int, useloopback);
 
 #define	V_ifnet		VNET(ifnet)
 #define	V_ifg_head	VNET(ifg_head)
 #define	V_if_index	VNET(if_index)
 #define	V_loif		VNET(loif)
+#define	V_useloopback	VNET(useloopback)
 
 extern	int ifqmaxlen;