From 8aa77a377d925cd353f45b65a651d3eac897e7c6 Mon Sep 17 00:00:00 2001
From: "Joseph C. Lehner" <joseph.c.lehner@gmail.com>
Date: Thu, 30 Sep 2021 09:55:26 +0200
Subject: [PATCH] Allow IpDadStateDeprecated, after CreateUnicastIpAddressEntry

---
 ethsock.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ethsock.c b/ethsock.c
index 0e953fc..c62d605 100644
--- a/ethsock.c
+++ b/ethsock.c
@@ -1169,7 +1169,9 @@ static int ethsock_ip_add_del(struct ethsock *sock, uint32_t ipaddr, uint32_t ip
 				}
 			}
 
-			if (row.DadState != IpDadStatePreferred) {
+			if (row.DadState == IpDadStateDeprecated) {
+				fprintf(stderr, "Warning: IP address marked as deprecated.\n");
+			} else if (row.DadState != IpDadStatePreferred) {
 				fprintf(stderr, "Failed to add IP address (state=%d).\n", row.DadState);
 				goto out;
 			}