From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Wed, 13 Dec 2023 06:37:06 +0000 (+0900)
Subject: sd-netlink: the kernel ignores NLM_F_APPEND in RTM_NEWNEXTHOP message but uses NLM_F_... 
X-Git-Tag: v256-rc1~1485^2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=5f6ab79571e974dd49c0be9db596dcfa72103f04;p=thirdparty%2Fsystemd.git

sd-netlink: the kernel ignores NLM_F_APPEND in RTM_NEWNEXTHOP message but uses NLM_F_REPLACE

See insert_nexthop() in net/ipv4/nexthop.c of the kernel.
---

diff --git a/src/libsystemd/sd-netlink/netlink-message-rtnl.c b/src/libsystemd/sd-netlink/netlink-message-rtnl.c
index 008e8022b1d..09116b14380 100644
--- a/src/libsystemd/sd-netlink/netlink-message-rtnl.c
+++ b/src/libsystemd/sd-netlink/netlink-message-rtnl.c
@@ -336,7 +336,7 @@ int sd_rtnl_message_new_nexthop(sd_netlink *rtnl, sd_netlink_message **ret,
                 return r;
 
         if (nlmsg_type == RTM_NEWNEXTHOP)
-                (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_APPEND;
+                (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_REPLACE;
 
         nhm = NLMSG_DATA((*ret)->hdr);