From 9547267dc56d5bf84b8119dfcb8e101202fac7d3 Mon Sep 17 00:00:00 2001
From: Tom Gundersen <teg@jklm.no>
Date: Thu, 2 Oct 2014 16:00:55 +0200
Subject: [PATCH] sd-dhcp6: support custom DUID's up to the size specified in
 the RFC

---
 src/libsystemd-network/sd-dhcp6-client.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/libsystemd-network/sd-dhcp6-client.c b/src/libsystemd-network/sd-dhcp6-client.c
index 130fe43cf2..ad6c5eb4d8 100644
--- a/src/libsystemd-network/sd-dhcp6-client.c
+++ b/src/libsystemd-network/sd-dhcp6-client.c
@@ -39,7 +39,10 @@
 #define SYSTEMD_PEN 43793
 #define HASH_KEY SD_ID128_MAKE(80,11,8c,c2,fe,4a,03,ee,3e,d6,0c,6f,36,39,14,09)
 
-#define MAX_DUID_LEN 32
+/* RFC 3315 section 9.1:
+ *      A DUID can be no more than 128 octets long (not including the type code).
+ */
+#define MAX_DUID_LEN 128
 
 struct sd_dhcp6_client {
         RefCount n_ref;