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-rw-r--r--zebra/kernel_netlink.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/zebra/kernel_netlink.c b/zebra/kernel_netlink.c
index ad0d4bf56b..c53d28a18c 100644
--- a/zebra/kernel_netlink.c
+++ b/zebra/kernel_netlink.c
@@ -1462,6 +1462,9 @@ void kernel_init(struct zebra_ns *zns)
one = 1;
ret = setsockopt(zns->netlink_dplane.sock, SOL_NETLINK, NETLINK_CAP_ACK,
&one, sizeof(one));
+ if (ret < 0)
+ zlog_notice(
+ "Registration for reduced ACK packet size failed, probably running an early kernel");
#endif
/* Register kernel socket. */