unifi controller linux:
rm unifi-*.sh &> /dev/null; wget https://get.glennr.nl/unifi/install/install_latest/unifi-latest.sh && bash unifi-latest.sh
dhcp controller option: 43
value: 0x0104XXXXXXXX raw value: 0104XXXXXXXX
0x
01 = suboption
04 = length of payload (must be 4)
C0A8030A = 192.168.3.10 in hex