From fa4de4f8cd1022b0dec49b85f72d9ec65908033b Mon Sep 17 00:00:00 2001
From: Roy Marples <roy@marples.name>
Date: Sat, 6 Jun 2026 08:20:41 +0100
Subject: [PATCH] privsep: smaller buffer size without INET6

---
 src/privsep.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/privsep.h b/src/privsep.h
index 122b94c5..0959b76f 100644
--- a/src/privsep.h
+++ b/src/privsep.h
@@ -93,10 +93,16 @@
 #define PS_START 0x4000
 #define PS_STOP	 0x8000
 
+#ifdef INET6
+#define PS_BUFLEN6 CMSG_SPACE(sizeof(struct in6_pktinfo) + sizeof(int))
+#else
+#define PS_BUFLEN6 0
+#endif
+
 /* Max INET message size + meta data for IPC */
 #define PS_BUFLEN                                                         \
 	((64 * 1024) + sizeof(struct ps_msghdr) + sizeof(struct msghdr) + \
-	    CMSG_SPACE(sizeof(struct in6_pktinfo) + sizeof(int)))
+	    PS_BUFLEN6)
 
 #define PSP_NAMESIZE 16 + INET_MAX_ADDRSTRLEN
 
-- 
2.47.3