What does PXE-T00 pxelinux.0 filename too long mean?

Question

Mikrotik

Mikrotik configured as a DHCP server with options 66 and 67

/ip dhcp-server option
add name="option66" code=66 value="s'10.10.14.200'"
add name="option67" code=67 value="'pxelinux.0'"
/ip dhcp-server option sets
add name="set-pxe" options=option66,option67

dnsmasq acts as a TFTP server

port=0
dhcp-boot=pxelinux.0,servername,10.10.14.200
enable-tftp
tftp-root=/var/tftp
tftp-no-fail

When trying to connect as a client in the logs

pxe dnsmasq-tftp[34708]: cannot read /var/tftp/pxelinux.0: File name too long

If you use a tftp client from a remote host, it distributes files perfectly, including pxelinux.0

This error appears on the HP OMNI 200 PC host. Shows a menu on ESXI hosts.

Answer 1

do not specify a directory, just a filename. Usually tftp runs in chroot