Add TODOs for IPv6 support.

Bug: 9580643
Change-Id: I131fcd0716f0e048dbf63c01db4ce95780c41dbb

3 files changed, 5 insertions, 0 deletions

diff --git a/src/cache.c b/src/cache.c
index d641ae7..6c0f225 100755
--- a/src/cache.c
+++ b/src/cache.c
@@ -1245,6 +1245,7 @@ void log_query(unsigned short flags, char *name, struct all_addr *addr, char *ar
   if (addr)
     {
 #ifdef HAVE_IPV6
+      /* TODO: support scoped addresses. struct all_addr doesn't store scope IDs. */
       inet_ntop(flags & F_IPV4 ? AF_INET : AF_INET6,
 		addr, addrbuff, ADDRSTRLEN);
 #else
diff --git a/src/network.c b/src/network.c
index 858e7b4..2df8c75 100755
--- a/src/network.c
+++ b/src/network.c
@@ -458,6 +458,8 @@ void create_bound_listener(struct listener **listeners, struct irec *iface)
       /* An interface may have an IPv6 address which is still undergoing DAD.
          If so, the bind will fail until the DAD completes, so we try over 20 seconds
          before failing. */
+      /* TODO: What to do here? 20 seconds is way too long. We use optimistic addresses, so bind()
+         will only fail if the address has already failed DAD, in which case retrying won't help. */
       if (iface->addr.sa.sa_family == AF_INET6 && (errno == ENODEV || errno == EADDRNOTAVAIL) &&
           dad_count++ < DAD_WAIT)
       {
diff --git a/src/rfc1035.c b/src/rfc1035.c
index ca5ceba..8ae0bfa 100755
--- a/src/rfc1035.c
+++ b/src/rfc1035.c
@@ -241,6 +241,8 @@ static int in_arpa_name_2_addr(char *namein, struct all_addr *addrp)
 	 that we can since there is no reason not to.
       */
 
+      /* TODO: does this make sense? */
+
       if (*name == '\\' && *(name+1) == '[' && 
 	  (*(name+2) == 'x' || *(name+2) == 'X'))
 	{