Description of problem: no route to 127.0.0.0 on kernel 2.4.21-20.EL Version-Release number of selected component (if applicable): EL3 U3 How reproducible: always Steps to Reproduce: 1. The output of route displays, # route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.1.0.0 * 255.255.252.0 U 0 0 0 eth0 169.254.0.0 * 255.255.0.0 U 0 0 0 eth0 default fw.awids 0.0.0.0 UG 0 0 0 eth0 There is no route to 127.0.0.0 or device lo. 2. 3. Actual results: There is no route to 127.0.0.0 or device lo. Expected results: show sth like, 127.0.0.0 * 255.0.0.0 U 0 0 0 lo Additional info: Is this a new change or something wrong?
The loopback device need not have a route, therefore we do not create one. It has been this way for a long time. You can add explicit routes for the loopback device but this is quite pointless.