Distro Upgraded TFTP Not Working

I upgrade v.2.210.62 to v.3.211.63-7 via the published script. After the upgrade the TFTP server is refusing connections.
[[email protected] ~]# grep tftp /var/log/messages
Apr 16 07:32:13 pbx in.tftpd[12415]: tftpd: read(ack): Connection refused
Apr 16 07:32:14 pbx in.tftpd[12417]: tftpd: read(ack): Connection refused
Apr 16 07:32:44 pbx in.tftpd[12419]: tftpd: read(ack): Connection refused
Apr 16 07:32:44 pbx in.tftpd[12421]: tftpd: read(ack): Connection refused
Apr 16 07:36:24 pbx in.tftpd[12491]: tftpd: read(ack): Connection refused
Apr 16 07:36:24 pbx in.tftpd[12493]: tftpd: read(ack): Connection refused
Apr 16 07:36:52 pbx in.tftpd[12495]: tftpd: read(ack): Connection refused
Apr 16 07:36:52 pbx in.tftpd[12497]: tftpd: read(ack): Connection refused
Apr 16 07:40:26 pbx in.tftpd[12901]: tftpd: read(ack): Connection refused
Apr 16 07:40:26 pbx in.tftpd[12903]: tftpd: read(ack): Connection refused
Apr 16 07:40:54 pbx in.tftpd[12905]: tftpd: read(ack): Connection refused
Apr 16 07:40:54 pbx in.tftpd[12907]: tftpd: read(ack): Connection refused

I have verified that the TFTP server is enabled and running.
[[email protected] ~]# cat /etc/xinetd.d/tftp

default: off

description: The tftp server serves files using the trivial file transfer \

protocol. The tftp protocol is often used to boot diskless \

workstations, download configuration files to network-aware printers, \

and to start the installation process for some operating systems.

service tftp
{
socket_type = dgram
protocol = udp
wait = yes
user = root
server = /usr/sbin/in.tftpd
server_args = -s /tftpboot
disable = no
per_source = 11
cps = 100 2
flags = IPv4
}

Configuration files have been created using EndPoint Manager Beta.

I found Intrusion Detection reenabled; for testing purposes, I have disabled it, and also disabled ipTables. Still receiving Connection Refused.

change to

server_args = -vv -s /tftpboot

service xinetd restart

and tailf /var/log/messages for more verbose diagnosis.

Apr 16 12:58:23 pbx in.tftpd[14708]: RRQ from 192.168.25.62 filename 000000000000-license.cfg
Apr 16 12:58:23 pbx in.tftpd[14708]: sending NAK (1, File not found) to 192.168.25.62
Apr 16 12:58:23 pbx in.tftpd[14709]: RRQ from 192.168.25.62 filename 0004f218ef39-license.cfg
Apr 16 12:58:23 pbx in.tftpd[14709]: sending NAK (1, File not found) to 192.168.25.62
Apr 16 12:58:23 pbx in.tftpd[14710]: RRQ from 192.168.25.62 filename 0004f218ef39-directory.xml
Apr 16 12:58:23 pbx in.tftpd[14710]: sending NAK (1, File not found) to 192.168.25.62
Apr 16 12:58:23 pbx in.tftpd[14711]: RRQ from 192.168.25.62 filename 000000000000-directory.xml
Apr 16 12:58:23 pbx in.tftpd[14711]: sending NAK (1, File not found) to 192.168.25.62
Apr 16 12:58:27 pbx in.tftpd[14712]: WRQ from 192.168.25.62 filename 0004f218ef39-app.log
Apr 16 12:58:27 pbx in.tftpd[14712]: sending NAK (1, File not found) to 192.168.25.62
Apr 16 12:59:27 pbx in.tftpd[14715]: RRQ from 192.168.25.62 filename 2345-12200-001.bootrom.ld
Apr 16 12:59:27 pbx in.tftpd[14716]: RRQ from 192.168.25.62 filename 0004f218ef39.cfg
Apr 16 12:59:28 pbx in.tftpd[14717]: RRQ from 192.168.25.62 filename polycom/0/2345-12200-001.sip.ld
Apr 16 12:59:28 pbx in.tftpd[14715]: tftpd: read(ack): Connection refused
Apr 16 12:59:29 pbx in.tftpd[14717]: tftpd: read(ack): Connection refused
Apr 16 12:59:31 pbx in.tftpd[14718]: WRQ from 192.168.25.62 filename 0004f218ef39-boot.log
Apr 16 12:59:31 pbx in.tftpd[14718]: sending NAK (1, File not found) to 192.168.25.62
Apr 16 12:59:56 pbx in.tftpd[14719]: RRQ from 192.168.25.62 filename 2345-12200-001.bootrom.ld
Apr 16 12:59:56 pbx in.tftpd[14720]: RRQ from 192.168.25.62 filename 0004f218ef39.cfg
Apr 16 12:59:56 pbx in.tftpd[14721]: RRQ from 192.168.25.62 filename polycom/0/2345-12200-001.sip.ld
Apr 16 12:59:56 pbx in.tftpd[14722]: RRQ from 192.168.25.62 filename 0004f218ef39-features.cfg
Apr 16 12:59:56 pbx in.tftpd[14723]: RRQ from 192.168.25.62 filename 322.cfg
Apr 16 12:59:56 pbx in.tftpd[14724]: RRQ from 192.168.25.62 filename 0004f218ef39-sip-interop.cfg
Apr 16 12:59:56 pbx in.tftpd[14725]: RRQ from 192.168.25.62 filename 0004f218ef39-phone.cfg
Apr 16 12:59:56 pbx in.tftpd[14725]: sending NAK (1, File not found) to 192.168.25.62
Apr 16 12:59:56 pbx in.tftpd[14726]: RRQ from 192.168.25.62 filename 0004f218ef39-web.cfg
Apr 16 12:59:56 pbx in.tftpd[14726]: sending NAK (1, File not found) to 192.168.25.62
Apr 16 12:59:56 pbx in.tftpd[14727]: RRQ from 192.168.25.62 filename 000000000000-license.cfg
Apr 16 12:59:56 pbx in.tftpd[14727]: sending NAK (1, File not found) to 192.168.25.62
Apr 16 12:59:56 pbx in.tftpd[14728]: RRQ from 192.168.25.62 filename 0004f218ef39-license.cfg
Apr 16 12:59:56 pbx in.tftpd[14728]: sending NAK (1, File not found) to 192.168.25.62
Apr 16 12:59:56 pbx in.tftpd[14729]: RRQ from 192.168.25.62 filename 0004f218ef39-directory.xml
Apr 16 12:59:56 pbx in.tftpd[14729]: sending NAK (1, File not found) to 192.168.25.62
Apr 16 12:59:56 pbx in.tftpd[14730]: RRQ from 192.168.25.62 filename 000000000000-directory.xml
Apr 16 12:59:56 pbx in.tftpd[14730]: sending NAK (1, File not found) to 192.168.25.62
Apr 16 12:59:57 pbx in.tftpd[14719]: tftpd: read(ack): Connection refused
Apr 16 12:59:57 pbx in.tftpd[14721]: tftpd: read(ack): Connection refused
Apr 16 13:00:00 pbx in.tftpd[14731]: WRQ from 192.168.25.62 filename 0004f218ef39-app.log
Apr 16 13:00:00 pbx in.tftpd[14731]: sending NAK (1, File not found) to 192.168.25.62

If you want to write WRQ you will need -c in your server_options, but it looks like 192.168.25.62 is not receiving on port udp/69

tcpdump -vvnn udp port 69

to see the flow