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-rw-r--r--slirp/socket.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/slirp/socket.h b/slirp/socket.h
index ac36aaa4b5..2cf476cb91 100644
--- a/slirp/socket.h
+++ b/slirp/socket.h
@@ -71,6 +71,8 @@ struct socket {
 #define SS_FACCEPTCONN		0x100	/* Socket is accepting connections from a host on the internet */
 #define SS_FACCEPTONCE		0x200	/* If set, the SS_FACCEPTCONN socket will die after one accept */
 
+#define SS_PERSISTENT_MASK	0xf000	/* Unremovable state bits */
+
 extern struct socket tcb;
 
 struct socket * solookup _P((struct socket *, struct in_addr, u_int, struct in_addr, u_int));