From f1fbeca8af5a3dea7bf59704e5500054d4938098 Mon Sep 17 00:00:00 2001
From: Hugues Morisset <morisset.hugues@gmail.com>
Date: Sun, 11 May 2025 19:47:15 +0200
Subject: [PATCH] Display IP6 addr infos in getifaddrs viz tool

---
 tool/viz/getifaddrs.c | 74 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

diff --git a/tool/viz/getifaddrs.c b/tool/viz/getifaddrs.c
index 67e3a4e4b..142e8005e 100644
--- a/tool/viz/getifaddrs.c
+++ b/tool/viz/getifaddrs.c
@@ -81,6 +81,80 @@ int main(int argc, char *argv[]) {
       tinyprint(1, "dstaddr: ", buf, "\n", NULL);
     }
 
+    if (ifa->ifa_addr->sa_family == AF_INET6) {
+      int scope = ((int *)ifa->ifa_data)[0];
+      int aflags = ((int *)ifa->ifa_data)[1];
+      // #define IPV6_ADDR_LOOPBACK	0x0010U
+      // #define IPV6_ADDR_LINKLOCAL	0x0020U
+      // #define IPV6_ADDR_SITELOCAL	0x0040U
+
+      // #define IFA_F_TEMPORARY		0x01
+      // #define	IFA_F_NODAD		0x02
+      // #define IFA_F_OPTIMISTIC	0x04
+      // #define IFA_F_DADFAILED		0x08
+      // #define	IFA_F_HOMEADDRESS	0x10
+      // #define IFA_F_DEPRECATED	0x20
+      // #define IFA_F_TENTATIVE		0x40
+      // #define IFA_F_PERMANENT		0x80
+      // #define IFA_F_MANAGETEMPADDR	0x100
+      // #define IFA_F_NOPREFIXROUTE	0x200
+      // #define IFA_F_MCAUTOJOIN	0x400
+      // #define IFA_F_STABLE_PRIVACY	0x800
+      tinyprint(1, "scope:", NULL);
+      if (scope == 0x10) {
+        tinyprint(1, " loopback", NULL);
+      }
+      if (scope == 0x20) {
+        tinyprint(1, " linklocal", NULL);
+      }
+      if (scope == 0x40) {
+        tinyprint(1, " sitelocal", NULL);
+      }
+      if (scope == 0x00) {
+        tinyprint(1, " global", NULL);
+      }
+      tinyprint(1, "\n", NULL);
+
+      tinyprint(1, "addr flags:", NULL);
+      if (aflags & 0x01) {
+        tinyprint(1, " temporary", NULL);
+      }
+      if (aflags & 0x02) {
+        tinyprint(1, " nodad", NULL);
+      }
+      if (aflags & 0x04) {
+        tinyprint(1, " optimistic", NULL);
+      }
+      if (aflags & 0x08) {
+        tinyprint(1, " dadfailed", NULL);
+      }
+      if (aflags & 0x10) {
+        tinyprint(1, " homeaddress", NULL);
+      }
+      if (aflags & 0x20) {
+        tinyprint(1, " deprecated", NULL);
+      }
+      if (aflags & 0x40) {
+        tinyprint(1, " tentative", NULL);
+      }
+      if (aflags & 0x80) {
+        tinyprint(1, " permanent", NULL);
+      }
+      if (aflags & 0x100) {
+        tinyprint(1, " managetempaddr", NULL);
+      }
+      if (aflags & 0x200) {
+        tinyprint(1, " noprefixroute", NULL);
+      }
+      if (aflags & 0x400) {
+        tinyprint(1, " mcautojoin", NULL);
+      }
+      if (aflags & 0x800) {
+        tinyprint(1, " stable_privacy", NULL);
+      }
+      tinyprint(1, "\n", NULL);
+    }
+
     tinyprint(1, "flags:", NULL);
     if (ifa->ifa_flags & IFF_UP) {
       tinyprint(1, " IFF_UP", NULL);