49 lines
1.6 KiB
Diff
49 lines
1.6 KiB
Diff
From 61fa3dd9e789997f66e848c7e3fb2f554ee374e2 Mon Sep 17 00:00:00 2001
|
|
From: Jiri Popelka <jpopelka@redhat.com>
|
|
Date: Thu, 18 Dec 2014 11:53:26 +0100
|
|
Subject: [PATCH] Write DUID_LLT even in stateless mode.
|
|
|
|
By default, DHCPv6 dhclient creates DUID-LL
|
|
if it is running in stateless mode (-6 -S) and
|
|
doesn't write it into leases file, most likely
|
|
because the DUID-LL is always generated the same.
|
|
|
|
It's however possible to specify DUID to be of type LLT instead of LL
|
|
with '-D LLT'. Rfc 3315 says that:
|
|
'Clients and servers using this type of DUID MUST
|
|
store the DUID-LLT in stable storage.'
|
|
That's not fulfiled in this case (-6 -S -D LLT),
|
|
because it's generated each time again.
|
|
|
|
It's not a big deal because the server doesn't store any
|
|
info about 'stateless' clients, so it doesn't matter
|
|
that the DUID-LLT is different each time.
|
|
But there's a TAHI test which tests this, i.e. that
|
|
DUID-LLT is still the same even in stateless mode.
|
|
It's a test DHCP_CONF.7.1.9, part B.
|
|
https://www.ipv6ready.org/docs/Phase2_DHCPv6_Conformance_Latest.pdf
|
|
|
|
Signed-off-by: Jiri Popelka <jpopelka@redhat.com>
|
|
---
|
|
client/dhclient.c | 4 +++-
|
|
1 file changed, 3 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/client/dhclient.c b/client/dhclient.c
|
|
index 5ef59cd..026e3fe 100644
|
|
--- a/client/dhclient.c
|
|
+++ b/client/dhclient.c
|
|
@@ -788,7 +788,9 @@ void run_stateless(int exit_mode)
|
|
if (default_duid.buffer != NULL)
|
|
data_string_forget(&default_duid, MDL);
|
|
|
|
- form_duid(&default_duid, MDL);
|
|
+ if (form_duid(&default_duid, MDL) == ISC_R_SUCCESS &&
|
|
+ duid_type == DUID_LLT)
|
|
+ write_duid(&default_duid);
|
|
}
|
|
|
|
/* Start a configuration state machine. */
|
|
--
|
|
2.1.0
|
|
|