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openSUSE:Step:15-SP1
avahi-glib2.19350
avahi-autoipd.README.SUSE
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File avahi-autoipd.README.SUSE of Package avahi-glib2.19350
IPv4LL in SUSE Linux ==================== IPv4LL provides support of peer to peer address assignment from a special link local IP range. SUSE Linux contains three implementations of IPv4LL autoip protocol: avahi-autoipd from avahi-autoipd package from avahi project =========================================================== This is a daemon, that runs and assign IPv4LL address, either as a fallback or at any time, depending on System/Zeroconf AVAHI_AUTOIPD_FORCE_BIND sysconfig key (disabled by default). The daemon runs permanently for each device, monitors the network status, and assigns IPv4LL address when requested. See http://avahi.org/wiki/AvahiAutoipd#ModesofOperation for more. Activate avahi-autoipd implementation ------------------------------------- - Install avahi-autoip package and check that System/Zeroconf AVAHI_AUTOIPD_FORCE_BIND sysconfig key is "yes" (the default). - Set the address settings in the YaST network configuration either to None (to have IPv4LL address only) or DHCP (if you want DHCP together with IPv4LL). - Note that NetworkManager uses avahi-autoipd by default. For AVAHI_AUTOIPD_FORCE_BIND=false: ----------------------------------- In this mode the daemon assigns IPv4LL address only of DHCP fails. Advantage: - All programs work with this setup. Disadvantage: - When DHCP assigns address, all existing IPv4LL connections are lost. For AVAHI_AUTOIPD_FORCE_BIND=true: ---------------------------------- In this mode the deamon forces binding address from IPv4LL address, even if standard IPv4 address exists. Advantage: - You can depend on IPv4LL address always assigned. Disadvantage: - Some programs don't work well with labeled IP addresses or interface aliases. autoip from sysconfig package ============================= autoip is not bound to sysconfig scripts and it is not called during as sysconfig is using an own implementation. To enable you have to set AVAHI_AUTOIPD_ENABLE=yes in /etc/sysconfig/avahi. Note, that it starts unconditionally then and breaks bridges,vlan,bond, ... If DHCP adrress is assigned, autoip ends immediately. Only if no DHCP address is assigned, it stays running as a daemon and provides IPv4LL address. Activate autoip implementation ------------------------------ - Do not install avahi-autoipd package or set System/Zeroconf AVAHI_AUTOIPD_FORCE_BIND sysconfig key to "no". - Set Zeroconf the address settings in the YaST network configuration. IPv4LL assigned by dhcpcd ========================= If dhcpcd fails to obtain a lease, it will probe for a valid IPv4LL address. Once obtained it will probe every 10 seconds for a DHCP server. Activate dhcpcd implementation ------------------------------ This implementation is not supported in SUSE yet. Enabling this implementation would require several manual changes in the /sbin/ifup-dhcp script (removal of -L argument, and skipping of calls to ${SCRIPTNAME}-autoip in /sbin/ifup (e. g. by not setting Zeroconf in the YaST network configuration).
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