we had a requirement to disable NetBIOS on our Windows clients at the branch offices. we have DHCP services running on the SRXes directly. since the documentation for this small task is very thin, I would like to share the most important bit:
KB article: https://kb.juniper.net/InfoCenter/index?page=content&id=KB23834&smlogin=true&actp=search
command: set option 43 byte-stream "0x01 04 00 00 00 02"
the command can be placed at "system services dhcp" level to be active for all pools, or into a specific pool as well.
have fun!
ciao