pxe dhcp

[root@bogon ~]# tcpdump -i enahisic2i3 udp  and  port 67 or port 68 or port 69 and  ether src 1c:ae:cb:eb:91:e6
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on enahisic2i3, link-type EN10MB (Ethernet), capture size 262144 bytes
08:58:05.001354 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 1c:ae:cb:eb:91:e6 (oui Unknown), length 359
08:58:05.008951 IP 172.16.100.109.ci3-software-2 > bogon.tftp:  54 RRQ "bootx64.efi" octet tsize 0 blksize 1468 windowsize 4
08:58:05.034154 IP 172.16.100.109.sftsrv > bogon.tftp:  46 RRQ "bootx64.efi" octet blksize 1468 windowsize 4
08:58:05.366251 IP 172.16.100.109.25300 > bogon.tftp:  60 RRQ "/grub.cfg-01-1c-ae-cb-eb-91-e6" octet blksize 1024 tsize 0
08:58:05.367427 IP 172.16.100.109.25301 > bogon.tftp:  48 RRQ "/grub.cfg-AC10646D" octet blksize 1024 tsize 0
08:58:05.368447 IP 172.16.100.109.25302 > bogon.tftp:  47 RRQ "/grub.cfg-AC10646" octet blksize 1024 tsize 0
08:58:05.369781 IP 172.16.100.109.25303 > bogon.tftp:  46 RRQ "/grub.cfg-AC1064" octet blksize 1024 tsize 0
08:58:05.371005 IP 172.16.100.109.25304 > bogon.tftp:  45 RRQ "/grub.cfg-AC106" octet blksize 1024 tsize 0
08:58:05.372269 IP 172.16.100.109.25305 > bogon.tftp:  44 RRQ "/grub.cfg-AC10" octet blksize 1024 tsize 0
08:58:05.373286 IP 172.16.100.109.25306 > bogon.tftp:  43 RRQ "/grub.cfg-AC1" octet blksize 1024 tsize 0
08:58:05.374215 IP 172.16.100.109.25307 > bogon.tftp:  42 RRQ "/grub.cfg-AC" octet blksize 1024 tsize 0
08:58:05.375236 IP 172.16.100.109.25308 > bogon.tftp:  41 RRQ "/grub.cfg-A" octet blksize 1024 tsize 0
08:58:05.376201 IP 172.16.100.109.25309 > bogon.tftp:  39 RRQ "/grub.cfg" octet blksize 1024 tsize 0
08:58:05.377308 IP 172.16.100.109.25310 > bogon.tftp:  71 RRQ "/EFI/centos/grub.cfg-01-1c-ae-cb-eb-91-e6" octet blksize 1024 tsize 0
08:58:05.378342 IP 172.16.100.109.25311 > bogon.tftp:  59 RRQ "/EFI/centos/grub.cfg-AC10646D" octet blksize 1024 tsize 0
08:58:05.379366 IP 172.16.100.109.25312 > bogon.tftp:  58 RRQ "/EFI/centos/grub.cfg-AC10646" octet blksize 1024 tsize 0
08:58:05.380269 IP 172.16.100.109.25313 > bogon.tftp:  57 RRQ "/EFI/centos/grub.cfg-AC1064" octet blksize 1024 tsize 0
08:58:05.381251 IP 172.16.100.109.25314 > bogon.tftp:  56 RRQ "/EFI/centos/grub.cfg-AC106" octet blksize 1024 tsize 0
08:58:05.382246 IP 172.16.100.109.25315 > bogon.tftp:  55 RRQ "/EFI/centos/grub.cfg-AC10" octet blksize 1024 tsize 0
08:58:05.383309 IP 172.16.100.109.25316 > bogon.tftp:  54 RRQ "/EFI/centos/grub.cfg-AC1" octet blksize 1024 tsize 0
08:58:05.