Add a config option to set the advertised BGP next hop.

Signed-off-by: Benjamin Cama <benoar@dolka.fr>

bgp.c

@@ -195,7 +195,14 @@ int bgp_start(struct bgp_peer *peer, char *name, int as, int keepalive,
     /* NEXT_HOP */
     a.flags = BGP_PATH_ATTR_FLAG_TRANS;
     a.code = BGP_PATH_ATTR_CODE_NEXT_HOP;
+    if (config->nexthop_address)
+    {
+	ip = config->nexthop_address;
+    }
+    else
+    {
 	ip = my_address; /* we're it */
+    }
     a.data.s.len = sizeof(ip);
     memcpy(a.data.s.value, &ip, sizeof(ip));
 

l2tpns.c

@@ -159,6 +159,7 @@ config_descriptt config_values[] = {
 	CONFIG("ipv6_prefix", ipv6_prefix, IPv6),
 	CONFIG("cli_bind_address", cli_bind_address, IPv4),
 	CONFIG("hostname", hostname, STRING),
+	CONFIG("nexthop_address", nexthop_address, IPv4),
 	{ NULL, 0, 0, 0 },
 };
 

l2tpns.h

@@ -728,6 +728,7 @@ typedef struct
 		int hold;
 		struct in_addr update_source;
 	} neighbour[BGP_NUM_PEERS];
+	in_addr_t	nexthop_address;
 #endif
 } configt;