Changes between Version 11 and Version 12 of AvahiAndUnicastDotLocal
- Timestamp:
- 03/11/07 06:14:06 (6 years ago)
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AvahiAndUnicastDotLocal
v11 v12 4 4 mDNS/DNS-SD is inherently incompatible with unicast DNS zones `.local`. We strongly recommend not to use Avahi or [http://0pointer.de/lennart/projects/nss-mdns/ nss-mdns] in such a network setup. 5 5 6 '''Background''': The Zeroconf protocols Avahi implements are known as mDNS and DNS-SD. mDNS (short for Multicast DNS) is based on trad ditional (unicast) DNS, but the two systems do not interact. mDNS is used to manage a special cooperative zone `.local` where all local mDNS servers can freely register host names or services. Before mDNS was introduced the domain `.local` was sometimes used in non-public (unicast) DNS servers to assign names in LANs. Unfortunately some networks still use this domain that way. If Avahi and nss-mdns is installed properly a machine does not contact a unicast DNS server when resolving names from the `.local` domain, thus the unicast DNS domain `.local` becomes unreachable.6 '''Background''': The Zeroconf protocols Avahi implements are known as mDNS and DNS-SD. mDNS (short for Multicast DNS) is based on traditional (unicast) DNS, but the two systems do not interact. mDNS is used to manage a special cooperative zone `.local` where all local mDNS servers can freely register host names or services. Before mDNS was introduced the domain `.local` was sometimes used in non-public (unicast) DNS servers to assign names in LANs. Unfortunately some networks still use this domain that way. If Avahi and nss-mdns is installed properly a machine does not contact a unicast DNS server when resolving names from the `.local` domain, thus the unicast DNS domain `.local` becomes unreachable. 7 7 8 8 ''If you come across a network where `.local` is a unicast DNS domain, please contact the local administrator and ask him to move his DNS zone to a different domain. If this is not possible, we recommend not to use Avahi in such a network at all.''
