dnsmasq-dhcp: no address range available for DHCP request via wlp2s0

`sudo ifconfig enx58ef687e16bb 192.168.1.1`
`docker run --net=host -e INTERFACE=enx58ef687e16bb quanlong/coreos-pxe-installer `
```
...
2019-06-13 20:32:09 (21.4 MB/s) - 'coreos_production_image.bin.bz2.sig' saved [543/543]

Serving HTTP on 0.0.0.0 port 3000 ...
dnsmasq: started, version 2.68 cachesize 150
dnsmasq: compile time options: IPv6 GNU-getopt DBus i18n IDN DHCP DHCPv6 no-Lua TFTP conntrack ipset auth
dnsmasq-dhcp: DHCP, proxy on subnet 192.168.1.1
dnsmasq-tftp: TFTP root is /app/tftp
dnsmasq: reading /etc/resolv.conf
dnsmasq: using nameserver 8.8.8.8#53
dnsmasq: read /etc/hosts - 14 addresses
dnsmasq-dhcp: PXE(enx58ef687e16bb) 1c:69:7a:01:d5:78 proxy
dnsmasq-dhcp: PXE(enx58ef687e16bb) 1c:69:7a:01:d5:78 proxy
dnsmasq-dhcp: no address range available for DHCP request via wlp2s0
dnsmasq-dhcp: PXE(enx58ef687e16bb) 1c:69:7a:01:d5:78 proxy
dnsmasq-dhcp: PXE(enx58ef687e16bb) 1c:69:7a:01:d5:78 proxy
dnsmasq-dhcp: PXE(enx58ef687e16bb) 1c:69:7a:01:d5:78 proxy
dnsmasq-dhcp: PXE(enx58ef687e16bb) 1c:69:7a:01:d5:78 proxy
dnsmasq-dhcp: PXE(enx58ef687e16bb) 1c:69:7a:01:d5:78 proxy
dnsmasq-dhcp: PXE(enx58ef687e16bb) 1c:69:7a:01:d5:78 proxy
```

Start by reproducing the shown docker run with INTERFACE=enx58ef687e16bb and compare the DHCP requests on enx58ef687e16bb and wlp2s0. Read the dnsmasq output around the proxy-PXE messages and the “no address range available” error; done means the reported DHCP failure is resolved without breaking the PXE/TFTP service.

Written by the indexing model from the issue text.