what script produces 169.254.0.0

[dan sawyer]

The system is fc7 with all the upgrades installed. The network scripts produce a dummy route to ip address 169.254.0.0. This conflicts with the local network. What is its purpose? What scripts create it? What is the result if it is removed? thanks - Dan

[stevea]

169.254.0.0 is part of an IP range that interfaces are supposed to use when dhcp fails.
It does NOT conflict with any valid network config, tho' it may be incompatible.

RFC3330
169.254.0.0/16 - This is the "link local" block. It is allocated for
communication between hosts on a single link. Hosts obtain these
addresses by auto-configuration, such as when a DHCP server may not
be found.

Fix your dhcp server.

[jim]

you get that IP if your network device (which ever is active) cannot connect to a dhcp server.

[wmakowski]

This has to do with Zeroconf (http://en.wikipedia.org/wiki/Zeroconf) or Zero Configuration Networking. I don't know everything about it, but it is used to automatically configure networked printers and other devices on your network. I know it is part of the script /etc/sysconfig/network-scripts/ifup-eth.

Here is another link Zeroconf: IPv4 link local address (http://www.progsoc.uts.edu.au/~wildfire/zeroconf/)

Bill

[sej7278]

echo 'NOZEROCONF=1' >> /etc/sysconfig/network