[CentOS] avahi and mDNS

Trying to figure out how to make it work. Seems as though it should be pretty easy.

installed package (from yum search) avahi-compat-libdns_sd.i386 : Libraries for Apple Bonjour mDNSResponder compatibility.

/etc/nsswitch.conf altered line so it reads, hosts: files dns mdns mdns4

started avahi-dnsconfd service (don't know that it's needed)

restarted avahi-daemon service

but the syslog says...

Oct 17 00:07:41 srv-adv avahi-daemon[12618]: WARNING: No NSS support for mDNS detected, consider installing nss-mdns!

and there is no package that I am aware of called nss-mdns, at least yum search doesn't turn up anything other than the avahi-compat-libdns_sd that I installed above.

Anyone know what I am missing?

Craig