Attached is an updated version of CONNMARK.patch where the 
ip_conntrack_core.c conflict has been resolved.

This should allow CONNMARK to be moved back from "oldnat" to "extra".

Regards
Henrik
diff -uN linux-2.4.3-pre3/include/linux/netfilter_ipv4/ip_conntrack.h linux-2.4.3-pre3-uml/include/linux/netfilter_ipv4/ip_conntrack.h
--- linux-2.4.3-pre3/include/linux/netfilter_ipv4/ip_conntrack.h	Fri Mar  9 21:43:28 2001
+++ linux-2.4.3-pre3-uml/include/linux/netfilter_ipv4/ip_conntrack.h	Wed Mar 21 13:20:37 2001
@@ -147,6 +147,9 @@
 	} nat;
 #endif /* CONFIG_IP_NF_NAT_NEEDED */
 
+#if defined(CONFIG_IP_NF_CONNTRACK_MARK)
+	unsigned long mark;
+#endif
 };
 
 /* Alter reply tuple (maybe alter helper).  If it's already taken,
diff -uN --exclude .* --exclude *.o linux-2.4.3-pre3/net/ipv4/netfilter/ip_conntrack_standalone.c linux-2.4.3-pre3-uml/net/ipv4/netfilter/ip_conntrack_standalone.c
--- linux-2.4.3-pre3/net/ipv4/netfilter/ip_conntrack_standalone.c	Thu Aug 10 21:35:15 2000
+++ linux-2.4.3-pre3-uml/net/ipv4/netfilter/ip_conntrack_standalone.c	Wed Mar 21 13:04:19 2001
@@ -92,6 +92,9 @@
 		len += sprintf(buffer + len, "[UNCONFIRMED] ");
 	len += sprintf(buffer + len, "use=%u ",
 		       atomic_read(&conntrack->ct_general.use));
+#if defined(CONFIG_IP_NF_CONNTRACK_MARK)
+	len += sprintf(buffer + len, "mark=%d ", conntrack->mark);
+#endif
 	len += sprintf(buffer + len, "\n");
 
 	return len;
--- linux-2.4.4-pre1-hno/net/ipv4/netfilter/ip_conntrack_core.c	Fri May  3 15:42:26 2002
+++ linux-2.4.4-pre1-uml/net/ipv4/netfilter/ip_conntrack_core.c	Fri May  3 15:44:11 2002
@@ -650,6 +650,9 @@
 		conntrack->status = IPS_EXPECTED;
 		conntrack->master = expected;
 		expected->sibling = conntrack;
+#if CONFIG_IP_NF_CONNTRACK_MARK
+		conntrack->mark = expected->expectant->mark;
+#endif
 		LIST_DELETE(&expect_list, expected);
 		expected->expectant->expecting--;
 		nf_conntrack_get(&master_ct(conntrack)->infos[0]);
diff -uN linux-2.4.3-pre3/include/linux/netfilter_ipv4/ipt_connmark.h linux-2.4.3-pre3-uml/include/linux/netfilter_ipv4/ipt_connmark.h
--- linux-2.4.3-pre3/include/linux/netfilter_ipv4/ipt_connmark.h	Thu Jan  1 01:00:00 1970
+++ linux-2.4.3-pre3-uml/include/linux/netfilter_ipv4/ipt_connmark.h	Wed Mar 21 11:38:46 2001
@@ -0,0 +1,9 @@
+#ifndef _IPT_CONNMARK_H
+#define _IPT_CONNMARK_H
+
+struct ipt_connmark_info {
+    unsigned long mark, mask;
+    u_int8_t invert;
+};
+
+#endif /*_IPT_CONNMARK_H*/
diff -uN --exclude .* --exclude *.o linux-2.4.3-pre3/net/ipv4/netfilter/ipt_connmark.c linux-2.4.3-pre3-uml/net/ipv4/netfilter/ipt_connmark.c
--- linux-2.4.3-pre3/net/ipv4/netfilter/ipt_connmark.c	Thu Jan  1 01:00:00 1970
+++ linux-2.4.3-pre3-uml/net/ipv4/netfilter/ipt_connmark.c	Wed Mar 21 13:23:33 2001
@@ -0,0 +1,55 @@
+/* Kernel module to match connection mark values. */
+#include <linux/module.h>
+#include <linux/skbuff.h>
+
+#include <linux/netfilter_ipv4/ip_tables.h>
+#include <linux/netfilter_ipv4/ipt_connmark.h>
+#include <linux/netfilter_ipv4/ip_conntrack.h>
+
+static int
+match(const struct sk_buff *skb,
+      const struct net_device *in,
+      const struct net_device *out,
+      const void *matchinfo,
+      int offset,
+      const void *hdr,
+      u_int16_t datalen,
+      int *hotdrop)
+{
+	const struct ipt_connmark_info *info = matchinfo;
+	enum ip_conntrack_info ctinfo;
+	struct ip_conntrack *ct = ip_conntrack_get((struct sk_buff *)skb, &ctinfo);
+	if (!ct)
+	    return 0;
+
+	return ((ct->mark & info->mask) == info->mark) ^ info->invert;
+}
+
+static int
+checkentry(const char *tablename,
+           const struct ipt_ip *ip,
+           void *matchinfo,
+           unsigned int matchsize,
+           unsigned int hook_mask)
+{
+	if (matchsize != IPT_ALIGN(sizeof(struct ipt_connmark_info)))
+		return 0;
+
+	return 1;
+}
+
+static struct ipt_match connmark_match
+= { { NULL, NULL }, "connmark", &match, &checkentry, NULL, THIS_MODULE };
+
+static int __init init(void)
+{
+	return ipt_register_match(&connmark_match);
+}
+
+static void __exit fini(void)
+{
+	ipt_unregister_match(&connmark_match);
+}
+
+module_init(init);
+module_exit(fini);
diff -uN linux-2.4.3-pre3/include/linux/netfilter_ipv4/ipt_CONNMARK.h linux-2.4.3-pre3-uml/include/linux/netfilter_ipv4/ipt_CONNMARK.h
--- linux-2.4.3-pre3/include/linux/netfilter_ipv4/ipt_CONNMARK.h	Thu Jan  1 01:00:00 1970
+++ linux-2.4.3-pre3-uml/include/linux/netfilter_ipv4/ipt_CONNMARK.h	Wed Mar 21 12:25:20 2001
@@ -0,0 +1,15 @@
+#ifndef _IPT_CONNMARK_H_target
+#define _IPT_CONNMARK_H_target
+
+enum {
+    IPT_CONNMARK_SET = 0,
+    IPT_CONNMARK_SAVE,
+    IPT_CONNMARK_RESTORE
+};
+
+struct ipt_connmark_target_info {
+	unsigned long mark;
+	u_int8_t mode;
+};
+
+#endif /*_IPT_CONNMARK_H_target*/
diff -uN --exclude .* --exclude *.o linux-2.4.3-pre3/net/ipv4/netfilter/ipt_CONNMARK.c linux-2.4.3-pre3-uml/net/ipv4/netfilter/ipt_CONNMARK.c
--- linux-2.4.3-pre3/net/ipv4/netfilter/ipt_CONNMARK.c	Thu Jan  1 01:00:00 1970
+++ linux-2.4.3-pre3-uml/net/ipv4/netfilter/ipt_CONNMARK.c	Wed May 20 17:49:10 2001
@@ -0,0 +1,87 @@
+/* This is a module which is used for setting/remembering the mark field of
+ * an connection, or optionally restore it to the skb
+ */
+#include <linux/module.h>
+#include <linux/skbuff.h>
+#include <linux/ip.h>
+#include <net/checksum.h>
+
+#include <linux/netfilter_ipv4/ip_tables.h>
+#include <linux/netfilter_ipv4/ipt_CONNMARK.h>
+#include <linux/netfilter_ipv4/ip_conntrack.h>
+
+static unsigned int
+target(struct sk_buff **pskb,
+       unsigned int hooknum,
+       const struct net_device *in,
+       const struct net_device *out,
+       const void *targinfo,
+       void *userinfo)
+{
+	const struct ipt_connmark_target_info *markinfo = targinfo;
+
+	enum ip_conntrack_info ctinfo;
+	struct ip_conntrack *ct = ip_conntrack_get((*pskb), &ctinfo);
+	if (ct) {
+	    switch(markinfo->mode) {
+	    case IPT_CONNMARK_SET:
+		ct->mark = markinfo->mark;
+		break;
+	    case IPT_CONNMARK_SAVE:
+		ct->mark = (*pskb)->nfmark;
+		break;
+	    case IPT_CONNMARK_RESTORE:
+		if (ct->mark != (*pskb)->nfmark) {
+		    (*pskb)->nfmark = ct->mark;
+		    (*pskb)->nfcache |= NFC_ALTERED;
+		}
+		break;
+	    }
+	}
+
+	return IPT_CONTINUE;
+}
+
+static int
+checkentry(const char *tablename,
+	   const struct ipt_entry *e,
+           void *targinfo,
+           unsigned int targinfosize,
+           unsigned int hook_mask)
+{
+	struct ipt_connmark_target_info *matchinfo = targinfo;
+	if (targinfosize != IPT_ALIGN(sizeof(struct ipt_connmark_target_info))) {
+		printk(KERN_WARNING "CONNMARK: targinfosize %u != %Zu\n",
+		       targinfosize,
+		       IPT_ALIGN(sizeof(struct ipt_connmark_target_info)));
+		return 0;
+	}
+
+	if (matchinfo->mode == IPT_CONNMARK_RESTORE) {
+	    if (strcmp(tablename, "mangle") != 0) {
+		    printk(KERN_WARNING "CONNMARK: restore can only be called from \"mangle\" table, not \"%s\"\n", tablename);
+		    return 0;
+	    }
+	}
+
+	return 1;
+}
+
+static struct ipt_target ipt_connmark_reg
+= { { NULL, NULL }, "CONNMARK", target, checkentry, NULL, THIS_MODULE };
+
+static int __init init(void)
+{
+	if (ipt_register_target(&ipt_connmark_reg))
+		return -EINVAL;
+
+	return 0;
+}
+
+static void __exit fini(void)
+{
+	ipt_unregister_target(&ipt_connmark_reg);
+}
+
+module_init(init);
+module_exit(fini);

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