diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index bdcee6981c60..918648409612 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -3708,6 +3708,7 @@ static inline void ipv6_store_devconf(struct ipv6_devconf *cnf,
 #endif
 	array[DEVCONF_DISABLE_IPV6] = cnf->disable_ipv6;
 	array[DEVCONF_ACCEPT_DAD] = cnf->accept_dad;
+	array[DEVCONF_FORCE_TLLAO] = cnf->force_tllao;
 }
 
 static inline size_t inet6_if_nlmsg_size(void)