you should be able to set a different port for dns, ie:
example, 10.0.0.17.55 specifies that the nameserver at 10.0.0.17 uses port 55.
sh-3.2# networksetup -setdnsservers Ethernet 220.127.116.11.54 18.104.22.168.54 is not a valid IP address. No changes were saved... ** Error: The parameters were not valid.
what gives? how can I fix this?