[Dnsmasq-discuss] Add an option to enable pxe without pxe-prompt or pxe-service?

[deliciouslytyped at nablambda.systems]

Hi folks,

Would it make sense to have an option to explicitly enable PXE without having to use or enabling pxe-prompt or pxe-service?

I'd like the following to work, and then it would end up being a minimal command for PXE booting using proxyDHCP, without having to do seemingly arbitrary / unnecessary things (which by their arbitraryness are non-intuitive):

dnsmasq -d --bind-interface --port=0 -l leases --dhcp-range=192.168.101.1,proxy --enable-tftp --tftp-root="$(realpath ./files)" --dhcp-boot=pxelinux.0

Currently what the command actually needs to be is:

dnsmasq -d --bind-interface --port=0 -l leases --dhcp-range=192.168.101.1,proxy --enable-tftp --tftp-root="$(realpath ./files)" --pxe-service=254,dummy --dhcp-boot=pxelinux.0,,192.168.101.1

Currently
1. https://github.com/ipxe/ipxe/issues/954 , if it is indeed a bug in dnsmasq, would need to get fixed to shorten dhcp-boot, and
2. the other issue is is that (proxy dhcp) pxe mode is only enabled if pxe-prompt or pxe-service is passed. Is this really necessary? Also, shouldn't proxy mode enable it? I'm not sure a --enable-pxe option makes much sense for proxy mode, though maybe it does for normal dhcp. 

Unrelated:
3. dnsmasq seems to pass pxe prompt suboptions (IIRC) 6 and 10 even when pxe-prompt isnt set / suboption 9 isn't sent (i.e. pxe-prompt isnt set, I think). Is this necessary?

Regards,
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