Initial commit

Author: Dave Taht

127.md

@@ -0,0 +1,11 @@
+# 127.0.0.0/8
+
+Traditionally this address range has been used for "local to the host"
+communication, however in surveying the state of the universe, only a few
+IP addresses are used
+
+We propose cutting down the "local space" to 127.0.0.0/16 (e.g. 127.0.0.0-
+127.0.255.255) and allowing 
+
+and even to some extent smarter ones, don't care what appears on the
+wire.

CLASSE.md

@@ -0,0 +1,4 @@
+# Making the former class-e space global unicast
+
+[patches/linux]
+

FAQ.md

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+# Frequently Asked Questions
+
+## Focus
+
+## It will take too long
+
+## These addresses will never work
+
+## We could allocate all these addresses
+
+## IPv6
+
+## Class-E is easy
+
+## globally routable
+
+why try to make 0/8 and 240/4 globally routable
+
+any attempt stumbles on the fact that manufacturers, users need to be
+incented to - some piece of gear will inevitably not allow ipv4 addresses
+in this range unless a standard exists. 
+
+Limited use IPv4 address spaces 
+
+Making class-e in particular globally routable makes it more possible
+to address other long-standing bugs in ipv4 implementations like zeroth
+networks, 

MULTICAST.md

@@ -0,0 +1,7 @@
+
+Thin layer above the MAC that translates a 224/4 address into a multicast
+request. Converting the former RESERVED range (232-229) into unicast requests
+
+
+
+

OVERVIEW.md

@@ -0,0 +1,12 @@
+carved up the world into into class A, class B, 
+
+It seemed an eminently good division at the time
+
+# Timeline
+
+* 1972 Arpanet rolled out
+* 1981 TCP/IP rolled out
+* 1992 CIDR developed
+* 1994 IPv6 started
+* 2012 IPv6 rollout started
+ 

PATCHES.md

@@ -0,0 +1,35 @@
+# Patches needed
+
+## 240/4
+
+### Linux
+
+### FreeBSD
+
+### Windows
+
+## 0/8
+
+### Linux
+
+### FreeBSD
+
+### Windows
+
+## 127/8
+
+### Linux
+
+### FreeBSD
+
+### Windows
+
+## 232/8-239/8
+
+### Linux
+
+### FreeBSD
+
+### Windows
+
+

README.md

@@ -1,2 +1,2 @@
 # ipv4-cleanup
-the IPv4 cleanup project - Making class-e (240/4), 0/, 127/8, 224/4 more usable - adding 419 million new IPs to the world
+The IPv4 cleanup project - Making class-e (240/4), 0/, 127/8, 224/4 more usable - adding 419 million new IPs to the world

ZERO.md

@@ -0,0 +1,20 @@
+# Fixing zeroth addressing
+
+After CIDR rolled out
+
+Is generally restricted to 
+
+made in the early 80s, that made 0 the broadcast address in BSD 4.3. BSD
+4.3 has long since been retired and we know of no operating system made
+in the last 3 decades that uses '0' for broadcast. 
+
+finding and eliminating the last remaining vestiges of zeroth
+
+Is generally limited to "ping", where an attempt to ping the zeroth
+network address still results in 
+
+fixing ping is not a problem: patches
+
+Any rational assessment of IPv4's continued existence stretches out
+another 20 years.
+That by increasing the range of usable ipv4 addresses

ZEROTH.md

@@ -0,0 +1,3 @@
+This directory contains accumulated patches for opening up the
+former "class-e" ipv4 address space.
+

patches/README.md

@@ -0,0 +1,4 @@
+# FreeBSD patches
+
+So far as we know on patch - for ICMP only - is needed for freeBSD
+to fully support class e.

patches/freebsd/README.md

@@ -0,0 +1,88 @@
+From 46bf067870156abd61fe24d14c2486d15b8b502c Mon Sep 17 00:00:00 2001
+From: Dave Taht <dave@taht.net>
+Date: Fri, 14 Dec 2018 18:38:40 +0000
+Subject: [PATCH 1/1] Allow class-e address assignment in ifconfig and early
+ boot
+
+While the linux kernel became mostly "class-e clean" a decade ago,
+and most distributions long ago switched to the iproute2 suite
+of utilities, which allow class-e (240.0.0.0/4) address assignment,
+distributions relying on busybox, toybox and other forms of
+ifconfig cannot assign class-e addresses without this kernel patch.
+
+With this patch, also, a boot command line on these addresses is feasible:
+(ip=248.0.1.2::248.0.1.1:255.255.255.0).
+
+While CIDR has been obsolete for 2 decades, and a survey of all the
+userspace open source code in the world shows most IN_whatever macros
+are also obsolete... rather than obsolete CIDR from this ioctl entirely,
+this patch merely enables class-e assignment, sanely.
+
+H/T to Vince Fuller and his original patch here:
+    https://lkml.org/lkml/2008/1/7/370
+
+Signed-off-by: Dave Taht <dave.taht@gmail.com>
+Reviewed-by: John Gilmore <gnu@toad.com>
+---
+ include/uapi/linux/in.h | 8 ++++++--
+ net/ipv4/devinet.c      | 4 +++-
+ net/ipv4/ipconfig.c     | 2 ++
+ 3 files changed, 11 insertions(+), 3 deletions(-)
+
+diff --git a/include/uapi/linux/in.h b/include/uapi/linux/in.h
+index 48e8a225b985..b27269a2bc95 100644
+--- a/include/uapi/linux/in.h
++++ b/include/uapi/linux/in.h
+@@ -268,8 +268,12 @@ struct sockaddr_in {
+ #define	IN_MULTICAST(a)		IN_CLASSD(a)
+ #define IN_MULTICAST_NET	0xF0000000
+ 
+-#define	IN_EXPERIMENTAL(a)	((((long int) (a)) & 0xf0000000) == 0xf0000000)
+-#define	IN_BADCLASS(a)		IN_EXPERIMENTAL((a))
++#define	IN_BADCLASS(a)		((((long int) (a) ) == 0xffffffff)
++#define	IN_EXPERIMENTAL(a)	IN_BADCLASS((a))
++
++#define	IN_CLASSE(a)		((((long int) (a)) & 0xf0000000) == 0xf0000000)
++#define	IN_CLASSE_NET		0xffffffff
++#define	IN_CLASSE_NSHIFT	0
+ 
+ /* Address to accept any incoming messages. */
+ #define	INADDR_ANY		((unsigned long int) 0x00000000)
+diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
+index 5b9b6d497f71..36dac0afcba5 100644
+--- a/net/ipv4/devinet.c
++++ b/net/ipv4/devinet.c
+@@ -952,7 +952,7 @@ static int inet_abc_len(__be32 addr)
+ {
+ 	int rc = -1;	/* Something else, probably a multicast. */
+ 
+-	if (ipv4_is_zeronet(addr))
++	if (ipv4_is_zeronet(addr) || ipv4_is_lbcast(addr))
+ 		rc = 0;
+ 	else {
+ 		__u32 haddr = ntohl(addr);
+@@ -963,6 +963,8 @@ static int inet_abc_len(__be32 addr)
+ 			rc = 16;
+ 		else if (IN_CLASSC(haddr))
+ 			rc = 24;
++		else if (IN_CLASSE(haddr))
++			rc = 32;
+ 	}
+ 
+ 	return rc;
+diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
+index 55757764c381..86820bcc1b6a 100644
+--- a/net/ipv4/ipconfig.c
++++ b/net/ipv4/ipconfig.c
+@@ -429,6 +429,8 @@ static int __init ic_defaults(void)
+ 			ic_netmask = htonl(IN_CLASSB_NET);
+ 		else if (IN_CLASSC(ntohl(ic_myaddr)))
+ 			ic_netmask = htonl(IN_CLASSC_NET);
++		else if (IN_CLASSE(ntohl(ic_myaddr)))
++			ic_netmask = htonl(IN_CLASSE_NET);
+ 		else {
+ 			pr_err("IP-Config: Unable to guess netmask for address %pI4\n",
+ 			       &ic_myaddr);
+-- 
+2.17.1
+

patches/linux/0001-linux-kernel-Allow-class-e-address-assignment-via-ifconfig-ioctl.patch

@@ -0,0 +1,29 @@
+From 12d5d77d4053d7511e14853c24bba7d0a3a71c4e Mon Sep 17 00:00:00 2001
+From: Dave Taht <dave@taht.net>
+Date: Sun, 9 Dec 2018 04:52:33 +0000
+Subject: [PATCH] Support class-e addressing in netifd
+
+---
+ proto.c | 6 +-----
+ 1 file changed, 1 insertion(+), 5 deletions(-)
+
+diff --git a/proto.c b/proto.c
+index 6047735..2819e30 100644
+--- a/proto.c
++++ b/proto.c
+@@ -131,11 +131,7 @@ parse_addr(struct interface *iface, const char *str, bool v6, int mask,
+ 	if (!parse_ip_and_netmask(af, str, &addr->addr, &addr->mask))
+ 		goto error;
+ 
+-	if (!v6) {
+-		if (IN_EXPERIMENTAL(ntohl(addr->addr.in.s_addr)))
+-			goto error;
+-
+-	} else if (IN6_IS_ADDR_MULTICAST(&addr->addr.in6))
++	if (!v6 && IN6_IS_ADDR_MULTICAST(&addr->addr.in6))
+ 		goto error;
+ 
+ 	if (broadcast)
+-- 
+2.17.1
+

patches/openwrt/0001-Support-class-e-addressing-in-netifd.patch

@@ -0,0 +1,15 @@
+# OpenWRT patches
+
+For class e support three patches were needed.
+
+* Backport of linux 4.20 ifconfig ioctl. Status: ACCEPTED.
+* Removal of IN_EXPERIMENTAL check in netifd. Status: ACCEPTED.
+* Removal of 240/4 from bcp38 packge. Status: ACCEPTEDa
+
+OpenWrt 19.01 will be fully class-e capable
+
+# 0/8 support
+
+# 232/8-239/8 Support
+
+# 127/8