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Date:	Wed, 9 Jul 2008 09:58:51 -0700
From:	Stephen Hemminger <>
To:	"Adam Langley" <>
Subject: [RFC] mark MD5 as broken in older (stable) kernels

The following should probably be sent to stable kernel tree to disable
MD5 in older kernels. It will avoid problems for all those vendor

--- a/net/ipv4/Kconfig	2008-07-09 09:52:50.000000000 -0700
+++ b/net/ipv4/Kconfig	2008-07-09 09:54:27.000000000 -0700
@@ -622,7 +622,7 @@ config DEFAULT_TCP_CONG
 config TCP_MD5SIG
 	bool "TCP: MD5 Signature Option support (RFC2385) (EXPERIMENTAL)"
-	depends on EXPERIMENTAL
 	select CRYPTO
 	select CRYPTO_MD5
@@ -631,6 +631,8 @@ config TCP_MD5SIG
 	  on the Internet.
 	  If unsure, say N.
+	  The current version is broken for case of TCP SACK and devices that
+          use TSO or Scatter/Gather.
 source "net/ipv4/ipvs/Kconfig"
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