The firewall on our modem is disabled. Afaik default Arch Linux installations doesn't come up with firewall enabled. I don't have a firewall on my Mac either. So I believe this has nothing to do with the firewall. Thank you for your interest btw. --- Quis custodiet ipsos custodes? On Thu, Apr 5, 2012 at 15:05, Jochen Maes (Gcool) <gcool.be@xxxxxxxxx>wrote: > Are you running a firewall on the Arch box (or elsewhere in the > network) through which the avahi traffic has to pass? As I understand > it (various similar issues found through Google), you need to > explicitly allow mulitcast DNS traffic (udp 5353) for this feature to > work.