pfSense

On 2.3.3
Vertical bar is being used in the cache files as the delimiter. Dnydns and widget are exploding on colon.

services_rfc2136.php: 166 (works)
$cached_ip_s = explode("|", file_get_contents($filename));

services_dyndns.php: 184 (don't know if this works, not using this service. But doubt that it works.)
$cached_ip_s = explode(":", file_get_contents($filename));

dyn_dns_status_widget.php: 120 (does not work with rfc2136 service, probably not with dyndns services either.)
$cached_ip_s = explode(":", file_get_contents($filename));

Change explode delimiter to vert bar and it works with rfc2136 service, probably will with dyndns services too.)
$cached_ip_s = explode("|", file_get_contents($filename));