We just received several new phones and we are unable to get them to auto-provision via option 66 or if we manually set the provisioning server. Some phones will make a request to the TFTP server:
Jul 12 11:41:11 asteriskha1 in.tftpd: RRQ from X.X.X.198 filename language.txt
Jul 12 11:41:11 asteriskha1 in.tftpd: sending NAK (1, File not found) to X.X.X.198
However they do not request their XML configs or any firmware downloads. The phones are on 188.8.131.52.
Both the Asterisk service and config server are remote.