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hc
2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 
 kernel/net/ipv6/route.c
....@@ -5401,16 +5401,17 @@
54015401 		nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_nlmsg_size,
54025402 					 &nexthop_len);
54035403 	} else {
5404
+		struct fib6_info *sibling, *next_sibling;
54045405 		struct fib6_nh *nh = f6i->fib6_nh;
54055406 
54065407 		nexthop_len = 0;
54075408 		if (f6i->fib6_nsiblings) {
5408
-			nexthop_len = nla_total_size(0)	 /* RTA_MULTIPATH */
5409
-				    + NLA_ALIGN(sizeof(struct rtnexthop))
5410
-				    + nla_total_size(16) /* RTA_GATEWAY */
5411
-				    + lwtunnel_get_encap_size(nh->fib_nh_lws);
5409
+			rt6_nh_nlmsg_size(nh, &nexthop_len);
54125410 
5413
-			nexthop_len *= f6i->fib6_nsiblings;
5411
+			list_for_each_entry_safe(sibling, next_sibling,
5412
+						 &f6i->fib6_siblings, fib6_siblings) {
5413
+				rt6_nh_nlmsg_size(sibling->fib6_nh, &nexthop_len);
5414
+			}
54145415 		}
54155416 		nexthop_len += lwtunnel_get_encap_size(nh->fib_nh_lws);
54165417 	}