pfSense

Looks like for some reason _getHostName() is forcing the DNS lookup to use -6 when it shouldn't, as that controls how the DNS lookup is made to the DNS server, not the type of address being passed.

This seems to fix it for me:

diff --git a/src/etc/inc/system.inc b/src/etc/inc/system.inc
index 079480c674..28db31a88c 100644
--- a/src/etc/inc/system.inc
+++ b/src/etc/inc/system.inc
@@ -2802,8 +2802,7 @@ function _getHostName($mac, $ip) {
        } else if ($dhcpip[$ip]) {
                return $dhcpip[$ip];
        } else {
-               $ipproto = (is_ipaddrv4($ip)) ? '-4 ' : '-6 ';
-               exec("/usr/bin/host -W 1 " . $ipproto . escapeshellarg($ip), $output);
+               exec("/usr/bin/host -W 1 " . escapeshellarg($ip), $output);
                if (preg_match('/.*pointer ([A-Za-z_0-9.-]+)\..*/', $output[0], $matches)) {
                        if ($matches[1] <> $ip) {
                                return $matches[1];

I need to look through the history and see why it was trying to pass -4 or -6, there may be some other case where that helps that I'm not seeing, or maybe it was an attempt to fix some other behavior that needs a different approach.

Applied in changeset 8c9ab20efe61161e30fe215166d8573c801b947d.

Jim - just to let you know, applied this and seems to be working now. Thanks for such a quick response!

Seems it works.

Updating subject for release notes.