From Bugzilla Helper: User-Agent: hippie/0.01 [en] (VGA; U; some O/S) Description of problem: Bringing up a dummy interface, though seems to function, has issues with an error reported upon ifup'ing the interface, IF the NETMASK is set to 255.255.255.255. This has to be the netmask, as we want to avoid adding network routes on the dummy interface. Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1. Create /etc/sysconfig/network-scripts/ifcfg-dummy0 with the following content: DEVICE=dummy0 ONBOOT=yes IPADDR=a.b.c.d NETMASK=255.255.255.255 (with a.b.c.d being an actual address of course) 2. run "ifup dummy0" 3. See the output: RTNETLINK answers: File exists Actual Results: The other thing to note (which is different than the 6.2 behavior, which does work by the way) is the routing table entries that are created. After upping the interface, the routing table looks like such: 0.0.0.0 0.0.0.0 255.255.255.255 UH 40 0 0 dummy0 192.168.6.0 0.0.0.0 255.255.255.0 U 40 0 0 eth0 172.16.52.0 0.0.0.0 255.255.252.0 U 40 0 0 eth1 127.0.0.0 0.0.0.0 255.0.0.0 U 40 0 0 lo 0.0.0.0 192.168.6.51 0.0.0.0 UG 40 0 0 eth0 I would have expected the entry for dummy0 to look like: a.b.c.d 0.0.0.0 255.255.255.255 UH 40 0 0 dummy0 (where a.b.c.d is that real IP address assigned to the dummy interface and seen from the output of ifconfig -a) Expected Results: Described in "actual results" Additional info:
Closing bugs on older, no longer supported, releases. Apologies for any lack of response. If this persists on a current release, such as Fedora Core 4, please open a new bug.