ReadyNAS NV+ and Lion problem with mDNS and avahi

sphardy wrote:
Primary workaround is to connect manually via IP address

When you do that, ReadyNAS NV+ (spare) with 4.1.8 software will go out of network in around 20 seconds because of the same issue.
Also, just discovered. A new Lion machine on opening in the network with such ReadyNAS device will also make it stop responding.

Jan  5 10:31:46 nas-89-AF-E6 init: Switching to runlevel: 0
Jan  5 10:33:35 nas-89-AF-E6 avahi-daemon[989]: Found user 'admin' (UID 98) and group 'admin' (GID 98).
Jan  5 10:33:35 nas-89-AF-E6 avahi-daemon[989]: Successfully dropped root privileges.
Jan  5 10:33:35 nas-89-AF-E6 avahi-daemon[989]: avahi-daemon 0.6.15 starting up.
Jan  5 10:33:35 nas-89-AF-E6 avahi-daemon[989]: Loading service file /etc/avahi/services/readynas.service.
Jan  5 10:33:35 nas-89-AF-E6 avahi-daemon[989]: New relevant interface eth0.IPv4 for mDNS.
Jan  5 10:33:35 nas-89-AF-E6 avahi-daemon[989]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.0.55.
Jan  5 10:33:35 nas-89-AF-E6 avahi-daemon[989]: Network interface enumeration completed.
Jan  5 10:33:36 nas-89-AF-E6 avahi-daemon[989]: Registering new address record for 192.168.0.55 on eth0.
Jan  5 10:33:36 nas-89-AF-E6 avahi-daemon[989]: Registering HINFO record with values 'PADRE'/'LINUX'.
Jan  5 10:33:37 nas-89-AF-E6 avahi-daemon[989]: Server startup complete. Host name is nas-89-AF-E6.local. Local service cookie is 743080681.
Jan  5 10:33:38 nas-89-AF-E6 avahi-daemon[989]: Service "ReadyNAS Discovery [nas-89-AF-E6]" (/etc/avahi/services/readynas.service) successfully established.
Jan  5 10:34:03 nas-89-AF-E6 avahi-daemon[989]: Interface eth0.IPv4 no longer relevant for mDNS.
Jan  5 10:34:03 nas-89-AF-E6 avahi-daemon[989]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.0.55.
Jan  5 10:34:03 nas-89-AF-E6 avahi-daemon[989]: Withdrawing address record for 192.168.0.55 on eth0.
Jan  5 10:34:04 nas-89-AF-E6 avahi-daemon[989]: New relevant interface eth0.IPv4 for mDNS.
Jan  5 10:34:04 nas-89-AF-E6 avahi-daemon[989]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.0.55.
Jan  5 10:34:04 nas-89-AF-E6 avahi-daemon[989]: Registering new address record for 192.168.0.55 on eth0.
Jan  5 10:34:24 nas-89-AF-E6 avahi-daemon[989]: Withdrawing address record for 192.168.0.55 on eth0.
Jan  5 10:34:24 nas-89-AF-E6 avahi-daemon[989]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.0.55.
Jan  5 10:34:24 nas-89-AF-E6 avahi-daemon[989]: iface.c: interface_mdns_mcast_join() called but no local address available.
Jan  5 10:34:24 nas-89-AF-E6 avahi-daemon[989]: Interface eth0.IPv4 no longer relevant for mDNS.
Jan  5 10:34:24 nas-89-AF-E6 avahi-daemon[989]: New relevant interface eth0.IPv4 for mDNS.
Jan  5 10:34:24 nas-89-AF-E6 avahi-daemon[989]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.0.55.
Jan  5 10:34:24 nas-89-AF-E6 avahi-daemon[989]: Registering new address record for 192.168.0.55 on eth0.
Jan  5 10:34:44 nas-89-AF-E6 upnpd(eth0)[1574]: Listening on 192.168.0.55:50000
Jan  5 10:34:44 nas-89-AF-E6 upnpd(eth0)[1574]: setsockopt - IP_ADD_MEMBERSHIP: Address already in use
Jan  5 10:34:44 nas-89-AF-E6 upnpd(eth0)[1574]: Failed to add membership for address 192.168.0.55

My current workaround is adding reverse resolution for local name of Lion host (editing /etc/hosts , see recent post at ommunist.com). But it does not solve the issue of ReadyNAS NV+ falling down if that machine restarts. Avahi goes down after that anyway :-(((