[root@stack1 ~(keystone_admin)]# tail -F /var/log/messages | grep -i tftp
Jan 30 22:58:10 stack1 in.tftpd[11638]: RRQ from ::ffff:10.225.160.21 filename pxelinux.0
Jan 30 22:58:10 stack1 in.tftpd[11638]: tftp: client does not accept options
Jan 30 22:58:10 stack1 in.tftpd[11639]: RRQ from ::ffff:10.225.160.21 filename pxelinux.0
Jan 30 22:58:11 stack1 in.tftpd[11641]: RRQ from ::ffff:10.225.160.21 filename pxelinux.cfg/44454c4c-3400-1030-804d-c6c04f474431
Jan 30 22:58:11 stack1 in.tftpd[11642]: RRQ from ::ffff:10.225.160.21 filename pxelinux.cfg/01-00-1c-23-b8-51-96
Jan 30 22:58:11 stack1 in.tftpd[11643]: RRQ from ::ffff:10.225.160.21 filename pxelinux.cfg/0AE1A015
Jan 30 22:58:11 stack1 in.tftpd[11644]: RRQ from ::ffff:10.225.160.21 filename pxelinux.cfg/0AE1A01
Jan 30 22:58:11 stack1 in.tftpd[11645]: RRQ from ::ffff:10.225.160.21 filename pxelinux.cfg/0AE1A0
Jan 30 22:58:11 stack1 in.tftpd[11646]: RRQ from ::ffff:10.225.160.21 filename pxelinux.cfg/0AE1A
Jan 30 22:58:11 stack1 in.tftpd[11647]: RRQ from ::ffff:10.225.160.21 filename pxelinux.cfg/0AE1
Jan 30 22:58:11 stack1 in.tftpd[11648]: RRQ from ::ffff:10.225.160.21 filename pxelinux.cfg/0AE
Jan 30 22:58:11 stack1 in.tftpd[11649]: RRQ from ::ffff:10.225.160.21 filename pxelinux.cfg/0A
Jan 30 22:58:11 stack1 in.tftpd[11650]: RRQ from ::ffff:10.225.160.21 filename pxelinux.cfg/0
Jan 30 22:58:11 stack1 in.tftpd[11651]: RRQ from ::ffff:10.225.160.21 filename pxelinux.cfg/default