iCall for DDNS?

If cnames are bugging you, here's a sample TCL script that will resolve cnames recursively, and a code snippet to show how to call it in place of dig:

---snip---
    exec /config/resolvv.tcl $fqdn $dns_ip
    set xx [open /config/resolvv.txt r+]
    set ip_list [read $xx]
    close $xx
    Grab first IP only.
    Roadmap feature might be to geolocate closest server from the list returned.
    set ip [lindex $ip_list 0]
---snip---

and here's the tcl script named resolvv.tcl. in my example, I am just saving this script to /config and making it executable.

!/usr/bin/tclsh
proc resolve_this { fqdn server {answer ""} } {
     set l1 [exec dig +short @$server $fqdn a]
     foreach i $l1 {
         set i [string tolower $i]
         set x [regexp {[a-z]} $i]
         if { $x } {
            resolve_this $i $server $answer
         } else {
            set answer "$answer\n$i"
         }
     }
     return $answer
}
set final_answer [string trim [resolve_this [lindex $argv 0] [lindex $argv 1]]]
set x [open /config/resolvv.txt w+]
puts $x $final_answer
close $x