[syslinux] pxechain.com loops back with WDSNBP started using DHCP Referral

[Jelle de Jong]

Windows 2012 WDS server: 10.87.0.202
Windows DHCP server: 10.87.0.152
066 (Boot Server Host Name): 10.87.3.19
067 (Bootfile Name): pxelinux.0

PXELinux CentOS 7 server : 10.87.3.19

# cat /srv/tftp/pxelinux.cfg/default
DEFAULT menu.c32
PROMPT 0
MENU TITLE Main Menu

LABEL CentOS-7-x86_64
   KERNEL CentOS-7-x86_64/vmlinuz
   APPEND initrd=CentOS-7-x86_64/initrd.img 
ks=http://vsxansible01.wdm.local/anaconda-ks.cfg
LABEL Windows Deployment Services
   kernel pxechain.com
   append 10.87.0.202::\boot\x64\wdsnbp.com


# cat  /etc/dnsmasq.d/provisioning.conf
port=0
log-dhcp
dhcp-range=10.87.3.19,proxy,255.255.248.0
dhcp-boot=pxelinux.0
pxe-service=X86PC,"Network Boot",pxelinux
enable-tftp
tftp-root=/srv/tftp

# output after choosing the "Windows Deployment Services" option, how 
can I stop WDSNBP to retry to connect to 10.87.3.19 instead of 
10.87.0.202 to whom I was pxechaining?

TFTP boot: 10.97.0.202 \boot\x64\wdsnbp.com

Downloaded WDSNBP from 10.87.0.202

WDSNBP started using DHCP Referral.
Contacting Server: 10.87.3.19 (Gateway: 0.0.0.0)..
No response from Windows Deplyment sever
Lauching pxeboot.com...
TFTP download failed.
PXE-M0F: Exiting Intel PXE ROM.
Operating System not found