DebConf5PrintingHowTo
From Wiki
[edit] Printing while in Debconf
[edit] LPRng/LPR setup
Stick the following (or similar) in your /etc/printcap
lp4||laserjet4 :lp=laserjet4@develserver2.debconf5.net:sd=/var/spool/lpd/lp4:sh:nb=1:mc=10:rw: lp5||reception :lp=reception@develserver2.debconf5.net:sd=/var/spool/lpd/lp5:sh:nb=1:mc=10:rw: lp6||smokki :lp=smoekki@develserver2.debconf5.net:sd=/var/spool/lpd/lp6:sh:nb=1:mc=10:rw:
[edit] CUPS
AFAIK, the printerserver should be broadcasting IPP and should just work.