lib, test: fix display ipv4 mapped ipv6 addresses

Display ipv4 mapped ipv6 addresses in the format ::ffff:A.B.C.D. Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
FRRouting · Oct 16, 2024 · 84ab021 · 84ab021
1 parent 40dce0b
commit 84ab021
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Showing 21 changed files with 91 additions and 80 deletions.
diff --git a/lib/ntop.c b/lib/ntop.c
@@ -116,7 +116,18 @@ const char *frr_inet_ntop(int af, const void * restrict src,
 			best = i - curlen;
 			bestlen = curlen;
 		}
-		/* do we want ::ffff:A.B.C.D? */
+		if (best == 0 && bestlen == 5 && b[10] == 0xff && b[11] == 0xff) {
+			/* ::ffff:A.B.C.D */
+			*o++ = ':';
+			*o++ = ':';
+			*o++ = 'f';
+			*o++ = 'f';
+			*o++ = 'f';
+			*o++ = 'f';
+			*o++ = ':';
+			b += 12;
+			goto inet4;
+		}
 		if (best == 0 && bestlen == 6) {
 			*o++ = ':';
 			*o++ = ':';

diff --git a/tests/topotests/bfd_isis_topo1/rt1/step1/show_ipv6_route.ref b/tests/topotests/bfd_isis_topo1/rt1/step1/show_ipv6_route.ref
@@ -1,7 +1,7 @@
 {
-  "::ffff:202:202\/128":[
+  "::ffff:2.2.2.2\/128":[
     {
-      "prefix":"::ffff:202:202\/128",
+      "prefix":"::ffff:2.2.2.2\/128",
       "protocol":"isis",
       "selected":true,
       "destSelected":true,
@@ -16,9 +16,9 @@
       ]
     }
   ],
-  "::ffff:303:303\/128":[
+  "::ffff:3.3.3.3\/128":[
     {
-      "prefix":"::ffff:303:303\/128",
+      "prefix":"::ffff:3.3.3.3\/128",
       "protocol":"isis",
       "selected":true,
       "destSelected":true,
@@ -33,9 +33,9 @@
       ]
     }
   ],
-  "::ffff:404:404\/128":[
+  "::ffff:4.4.4.4\/128":[
     {
-      "prefix":"::ffff:404:404\/128",
+      "prefix":"::ffff:4.4.4.4\/128",
       "protocol":"isis",
       "selected":true,
       "destSelected":true,
@@ -50,9 +50,9 @@
       ]
     }
   ],
-  "::ffff:505:505\/128":[
+  "::ffff:5.5.5.5\/128":[
     {
-      "prefix":"::ffff:505:505\/128",
+      "prefix":"::ffff:5.5.5.5\/128",
       "protocol":"isis",
       "selected":true,
       "destSelected":true,

diff --git a/tests/topotests/bfd_isis_topo1/rt1/step3/show_ipv6_route_healthy.ref b/tests/topotests/bfd_isis_topo1/rt1/step3/show_ipv6_route_healthy.ref
@@ -1,7 +1,7 @@
 {
-  "::ffff:202:202\/128":[
+  "::ffff:2.2.2.2\/128":[
     {
-      "prefix":"::ffff:202:202\/128",
+      "prefix":"::ffff:2.2.2.2\/128",
       "protocol":"isis",
       "selected":true,
       "destSelected":true,
@@ -16,9 +16,9 @@
       ]
     }
   ],
-  "::ffff:303:303\/128":[
+  "::ffff:3.3.3.3\/128":[
     {
-      "prefix":"::ffff:303:303\/128",
+      "prefix":"::ffff:3.3.3.3\/128",
       "protocol":"isis",
       "selected":true,
       "destSelected":true,
@@ -33,9 +33,9 @@
       ]
     }
   ],
-  "::ffff:404:404\/128":[
+  "::ffff:4.4.4.4\/128":[
     {
-      "prefix":"::ffff:404:404\/128",
+      "prefix":"::ffff:4.4.4.4\/128",
       "protocol":"isis",
       "selected":true,
       "destSelected":true,
@@ -50,9 +50,9 @@
       ]
     }
   ],
-  "::ffff:505:505\/128":[
+  "::ffff:5.5.5.5\/128":[
     {
-      "prefix":"::ffff:505:505\/128",
+      "prefix":"::ffff:5.5.5.5\/128",
       "protocol":"isis",
       "selected":true,
       "destSelected":true,

diff --git a/tests/topotests/bfd_isis_topo1/rt1/step3/show_ipv6_route_rt2_down.ref b/tests/topotests/bfd_isis_topo1/rt1/step3/show_ipv6_route_rt2_down.ref
@@ -1,7 +1,7 @@
 {
-  "::ffff:202:202\/128":[
+  "::ffff:2.2.2.2\/128":[
     {
-      "prefix":"::ffff:202:202\/128",
+      "prefix":"::ffff:2.2.2.2\/128",
       "protocol":"isis",
       "selected":true,
       "destSelected":true,
@@ -16,9 +16,9 @@
       ]
     }
   ],
-  "::ffff:303:303\/128":[
+  "::ffff:3.3.3.3\/128":[
     {
-      "prefix":"::ffff:303:303\/128",
+      "prefix":"::ffff:3.3.3.3\/128",
       "protocol":"isis",
       "selected":true,
       "destSelected":true,
@@ -33,9 +33,9 @@
       ]
     }
   ],
-  "::ffff:404:404\/128":[
+  "::ffff:4.4.4.4\/128":[
     {
-      "prefix":"::ffff:404:404\/128",
+      "prefix":"::ffff:4.4.4.4\/128",
       "protocol":"isis",
       "selected":true,
       "destSelected":true,
@@ -50,9 +50,9 @@
       ]
     }
   ],
-  "::ffff:505:505\/128":[
+  "::ffff:5.5.5.5\/128":[
     {
-      "prefix":"::ffff:505:505\/128",
+      "prefix":"::ffff:5.5.5.5\/128",
       "protocol":"isis",
       "selected":true,
       "destSelected":true,

diff --git a/tests/topotests/bfd_isis_topo1/rt1/step3/show_ipv6_route_rt3_down.ref b/tests/topotests/bfd_isis_topo1/rt1/step3/show_ipv6_route_rt3_down.ref
@@ -1,7 +1,7 @@
 {
-  "::ffff:202:202\/128":[
+  "::ffff:2.2.2.2\/128":[
     {
-      "prefix":"::ffff:202:202\/128",
+      "prefix":"::ffff:2.2.2.2\/128",
       "protocol":"isis",
       "selected":true,
       "destSelected":true,
@@ -16,9 +16,9 @@
       ]
     }
   ],
-  "::ffff:303:303\/128":[
+  "::ffff:3.3.3.3\/128":[
     {
-      "prefix":"::ffff:303:303\/128",
+      "prefix":"::ffff:3.3.3.3\/128",
       "protocol":"isis",
       "selected":true,
       "destSelected":true,
@@ -33,9 +33,9 @@
       ]
     }
   ],
-  "::ffff:404:404\/128":[
+  "::ffff:4.4.4.4\/128":[
     {
-      "prefix":"::ffff:404:404\/128",
+      "prefix":"::ffff:4.4.4.4\/128",
       "protocol":"isis",
       "selected":true,
       "destSelected":true,
@@ -50,9 +50,9 @@
       ]
     }
   ],
-  "::ffff:505:505\/128":[
+  "::ffff:5.5.5.5\/128":[
     {
-      "prefix":"::ffff:505:505\/128",
+      "prefix":"::ffff:5.5.5.5\/128",
       "protocol":"isis",
       "selected":true,
       "destSelected":true,

diff --git a/tests/topotests/bfd_isis_topo1/rt1/zebra.conf b/tests/topotests/bfd_isis_topo1/rt1/zebra.conf
@@ -10,7 +10,7 @@ hostname rt1
 !
 interface lo
  ip address 1.1.1.1/32
- ipv6 address ::ffff:0101:0101/128
+ ipv6 address ::ffff:1.1.1.1/128
 !
 interface eth-rt2
  ip address 10.0.1.1/24

diff --git a/tests/topotests/bfd_isis_topo1/rt2/zebra.conf b/tests/topotests/bfd_isis_topo1/rt2/zebra.conf
@@ -7,7 +7,7 @@ hostname rt2
 !
 interface lo
  ip address 2.2.2.2/32
- ipv6 address ::ffff:0202:0202/128
+ ipv6 address ::ffff:2.2.2.2/128
 !
 interface eth-rt1
  ip address 10.0.1.2/24

diff --git a/tests/topotests/bfd_isis_topo1/rt3/zebra.conf b/tests/topotests/bfd_isis_topo1/rt3/zebra.conf
@@ -7,7 +7,7 @@ hostname rt3
 !
 interface lo
  ip address 3.3.3.3/32
- ipv6 address ::ffff:0303:0303/128
+ ipv6 address ::ffff:3.3.3.3/128
 !
 interface eth-rt1
  ip address 10.0.2.2/24

diff --git a/tests/topotests/bfd_isis_topo1/rt4/zebra.conf b/tests/topotests/bfd_isis_topo1/rt4/zebra.conf
@@ -7,7 +7,7 @@ hostname rt4
 !
 interface lo
  ip address 4.4.4.4/32
- ipv6 address ::ffff:0404:0404/128
+ ipv6 address ::ffff:4.4.4.4/128
 !
 interface eth-rt3
  ip address 10.0.4.2/24

diff --git a/tests/topotests/bfd_isis_topo1/rt5/zebra.conf b/tests/topotests/bfd_isis_topo1/rt5/zebra.conf
@@ -7,7 +7,7 @@ hostname rt5
 !
 interface lo
  ip address 5.5.5.5/32
- ipv6 address ::ffff:0505:0505/128
+ ipv6 address ::ffff:5.5.5.5/128
 !
 interface eth-rt2
  ip address 10.0.3.2/24

diff --git a/tests/topotests/bfd_ospf_topo1/rt1/step1/show_ipv6_route.ref b/tests/topotests/bfd_ospf_topo1/rt1/step1/show_ipv6_route.ref
@@ -1,7 +1,7 @@
 {
-  "::ffff:202:202\/128":[
+  "::ffff:2.2.2.2\/128":[
     {
-      "prefix":"::ffff:202:202\/128",
+      "prefix":"::ffff:2.2.2.2\/128",
       "protocol":"ospf6",
       "selected":true,
       "destSelected":true,
@@ -16,9 +16,9 @@
       ]
     }
   ],
-  "::ffff:303:303\/128":[
+  "::ffff:3.3.3.3\/128":[
     {
-      "prefix":"::ffff:303:303\/128",
+      "prefix":"::ffff:3.3.3.3\/128",
       "protocol":"ospf6",
       "selected":true,
       "destSelected":true,
@@ -33,9 +33,9 @@
       ]
     }
   ],
-  "::ffff:404:404\/128":[
+  "::ffff:4.4.4.4\/128":[
     {
-      "prefix":"::ffff:404:404\/128",
+      "prefix":"::ffff:4.4.4.4\/128",
       "protocol":"ospf6",
       "selected":true,
       "destSelected":true,
@@ -50,9 +50,9 @@
       ]
     }
   ],
-  "::ffff:505:505\/128":[
+  "::ffff:5.5.5.5\/128":[
     {
-      "prefix":"::ffff:505:505\/128",
+      "prefix":"::ffff:5.5.5.5\/128",
       "protocol":"ospf6",
       "selected":true,
       "destSelected":true,

diff --git a/tests/topotests/bfd_ospf_topo1/rt1/step3/show_ipv6_route_healthy.ref b/tests/topotests/bfd_ospf_topo1/rt1/step3/show_ipv6_route_healthy.ref
@@ -1,7 +1,7 @@
 {
-  "::ffff:202:202\/128":[
+  "::ffff:2.2.2.2\/128":[
     {
-      "prefix":"::ffff:202:202\/128",
+      "prefix":"::ffff:2.2.2.2\/128",
       "protocol":"ospf6",
       "selected":true,
       "destSelected":true,
@@ -16,9 +16,9 @@
       ]
     }
   ],
-  "::ffff:303:303\/128":[
+  "::ffff:3.3.3.3\/128":[
     {
-      "prefix":"::ffff:303:303\/128",
+      "prefix":"::ffff:3.3.3.3\/128",
       "protocol":"ospf6",
       "selected":true,
       "destSelected":true,
@@ -33,9 +33,9 @@
       ]
     }
   ],
-  "::ffff:404:404\/128":[
+  "::ffff:4.4.4.4\/128":[
     {
-      "prefix":"::ffff:404:404\/128",
+      "prefix":"::ffff:4.4.4.4\/128",
       "protocol":"ospf6",
       "selected":true,
       "destSelected":true,
@@ -50,9 +50,9 @@
       ]
     }
   ],
-  "::ffff:505:505\/128":[
+  "::ffff:5.5.5.5\/128":[
     {
-      "prefix":"::ffff:505:505\/128",
+      "prefix":"::ffff:5.5.5.5\/128",
       "protocol":"ospf6",
       "selected":true,
       "destSelected":true,

diff --git a/tests/topotests/bfd_ospf_topo1/rt1/step3/show_ipv6_route_rt2_down.ref b/tests/topotests/bfd_ospf_topo1/rt1/step3/show_ipv6_route_rt2_down.ref
@@ -1,7 +1,7 @@
 {
-  "::ffff:202:202\/128":[
+  "::ffff:2.2.2.2\/128":[
     {
-      "prefix":"::ffff:202:202\/128",
+      "prefix":"::ffff:2.2.2.2\/128",
       "protocol":"ospf6",
       "selected":true,
       "destSelected":true,
@@ -16,9 +16,9 @@
       ]
     }
   ],
-  "::ffff:303:303\/128":[
+  "::ffff:3.3.3.3\/128":[
     {
-      "prefix":"::ffff:303:303\/128",
+      "prefix":"::ffff:3.3.3.3\/128",
       "protocol":"ospf6",
       "selected":true,
       "destSelected":true,
@@ -33,9 +33,9 @@
       ]
     }
   ],
-  "::ffff:404:404\/128":[
+  "::ffff:4.4.4.4\/128":[
     {
-      "prefix":"::ffff:404:404\/128",
+      "prefix":"::ffff:4.4.4.4\/128",
       "protocol":"ospf6",
       "selected":true,
       "destSelected":true,
@@ -50,9 +50,9 @@
       ]
     }
   ],
-  "::ffff:505:505\/128":[
+  "::ffff:5.5.5.5\/128":[
     {
-      "prefix":"::ffff:505:505\/128",
+      "prefix":"::ffff:5.5.5.5\/128",
       "protocol":"ospf6",
       "selected":true,
       "destSelected":true,