change to max length of jump target

I'm in the process of upgrading to iptables 1.4.9 and noticed that the max jump target has changed from 30 characters to 28 characters. For example I can still create a 29 character chain but can't create a jump target to it:

root@r1:~# iptables -t filter --new-chain A2345678901234567890123456789

root@r1:~# iptables -L A2345678901234567890123456789
Chain A2345678901234567890123456789 (0 references)
target     prot opt source               destination

root@r1:~# iptables -t filter --insert VYATTA_IN_HOOK 1 --in-interface
eth3 --jump A2345678901234567890123456789
iptables v1.4.9: Invalid target name `A2345678901234567890123456789' (28
chars max)
Try `iptables -h' or 'iptables --help' for more information.

This worked in 1.4.4. In the code I see these changes:

git show 491c1660 include/linux/netfilter/x_tables.h commit 491c1660fced08e2d1a08c101c63af04250275d0

Author: Jan Engelhardt <[email protected]>
Date:   Mon Jun 7 10:59:03 2010 +0200

includes: sync header files from Linux 2.6.35-rc1

b/include/linux/netfilter/x_tabl
index ccb5641..fa2d957 100644

@@ -1,9 +1,10 @@
 #ifndef _X_TABLES_H
 #define _X_TABLES_H
-
+#include <linux/kernel.h>
 #include <linux/types.h>
 
 #define XT_FUNCTION_MAXNAMELEN 30
+#define XT_EXTENSION_MAXNAMELEN 29
 #define XT_TABLE_MAXNAMELEN 32
 
 

and:

git show 0cb675b8 iptables.c
commit 0cb675b8f18c4b074d4c69461638820708e98100

Author: Jan Engelhardt <[email protected]>
Date:   Mon Jun 7 11:50:25 2010 +0200

xtables: another try at chain name length checking

Since XT_EXTENSION_MAXNAMELEN is now available, make use of it and clear the confusion.

index 19c2af5..efe993e 100644
@@ -460,10 +460,10 @@ parse_target(const char *targetname)
                xtables_error(PARAMETER_PROBLEM,
                           "Invalid target name (too short)");
 
-       if (strlen(targetname) > XT_FUNCTION_MAXNAMELEN - 1)
+       if (strlen(targetname) >= XT_EXTENSION_MAXNAMELEN)
                xtables_error(PARAMETER_PROBLEM,
                           "Invalid target name `%s' (%u chars max)",
                           targetname, XT_EXTENSION_MAXNAMELEN - 1);
 
 
 

Is the change from > to >= a mistake or is max length change intentional?

thanks,

stig