Merge pull request #5167

2d06c0f Add missing reserved address spaces. (Matt Corallo)

src/netbase.cpp

@@ -667,11 +667,28 @@ bool CNetAddr::IsRFC1918() const
         (GetByte(3) == 172 && (GetByte(2) >= 16 && GetByte(2) <= 31)));
 }
 
+bool CNetAddr::IsRFC2544() const
+{
+    return IsIPv4() && GetByte(3) == 198 && (GetByte(2) == 18 || GetByte(2) == 19);
+}
+
 bool CNetAddr::IsRFC3927() const
 {
     return IsIPv4() && (GetByte(3) == 169 && GetByte(2) == 254);
 }
 
+bool CNetAddr::IsRFC6598() const
+{
+    return IsIPv4() && GetByte(3) == 100 && GetByte(2) >= 64 && GetByte(2) <= 127;
+}
+
+bool CNetAddr::IsRFC5737() const
+{
+    return IsIPv4() && ((GetByte(3) == 192 && GetByte(2) == 0 && GetByte(1) == 2) ||
+        (GetByte(3) == 198 && GetByte(2) == 51 && GetByte(1) == 100) ||
+        (GetByte(3) == 203 && GetByte(2) == 0 && GetByte(1) == 113));
+}
+
 bool CNetAddr::IsRFC3849() const
 {
     return GetByte(15) == 0x20 && GetByte(14) == 0x01 && GetByte(13) == 0x0D && GetByte(12) == 0xB8;
@@ -778,7 +795,7 @@ bool CNetAddr::IsValid() const
 
 bool CNetAddr::IsRoutable() const
 {
-    return IsValid() && !(IsRFC1918() || IsRFC3927() || IsRFC4862() || (IsRFC4193() && !IsTor()) || IsRFC4843() || IsLocal());
+    return IsValid() && !(IsRFC1918() || IsRFC2544() || IsRFC3927() || IsRFC4862() || IsRFC6598() || IsRFC5737() || (IsRFC4193() && !IsTor()) || IsRFC4843() || IsLocal());
 }
 
 enum Network CNetAddr::GetNetwork() const

src/netbase.h

@@ -61,6 +61,9 @@ class CNetAddr
         bool IsIPv4() const;    // IPv4 mapped address (::FFFF:0:0/96, 0.0.0.0/0)
         bool IsIPv6() const;    // IPv6 address (not mapped IPv4, not Tor)
         bool IsRFC1918() const; // IPv4 private networks (10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12)
+        bool IsRFC2544() const; // IPv4 inter-network communcations (192.18.0.0/15)
+        bool IsRFC6598() const; // IPv4 ISP-level NAT (100.64.0.0/10)
+        bool IsRFC5737() const; // IPv4 documentation addresses (192.0.2.0/24, 198.51.100.0/24, 203.0.113.0/24)
         bool IsRFC3849() const; // IPv6 documentation address (2001:0DB8::/32)
         bool IsRFC3927() const; // IPv4 autoconfig (169.254.0.0/16)
         bool IsRFC3964() const; // IPv6 6to4 tunnelling (2002::/16)