diff --git a/arch/sim/src/sim/up_usrsock_host.c b/arch/sim/src/sim/up_usrsock_host.c
index d6428fc3998..ed701de7fe7 100644
--- a/arch/sim/src/sim/up_usrsock_host.c
+++ b/arch/sim/src/sim/up_usrsock_host.c
@@ -187,6 +187,7 @@ static int usrsock_host_sockopt(int sockfd, int level, int optname,
 
 int usrsock_host_socket(int domain, int type, int protocol)
 {
+  int opt = 1;
   int ret;
 
   if (domain == NUTTX_PF_INET)
@@ -238,6 +239,12 @@ int usrsock_host_socket(int domain, int type, int protocol)
       return -errno;
     }
 
+  /* Reuse all addresses to avoid bind fail if the
+   * nuttx exits unexpectedly.
+   */
+
+  setsockopt(ret, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
+
   sock_nonblock(ret, true);
   usrsock_host_set_fd(ret, &g_active_read_fds);
 
@@ -435,6 +442,7 @@ int usrsock_host_listen(int sockfd, int backlog)
 int usrsock_host_accept(int sockfd, struct nuttx_sockaddr *addr,
                         nuttx_socklen_t *addrlen)
 {
+  socklen_t naddrlen = sizeof(socklen_t);
   struct sockaddr naddr;
   socklen_t naddrlen;
   int ret;