Description of problem: In our setup we require to provide a specific network route aside the default gateway. Therefore we use the classless route option of DHCP. This works fine for regular DHCP (on installed machines), but fails during installation. For example, if I try to use a kickstart file from a web server via HTTP this fails if the web server is somewhere where routing across the default gateway is required (or if this is required to reach the DNS server). Version-Release number of selected component (if applicable): dracut-034-64.git20131205.fc20.x86_64 (determined after the completed installation on the machine before applying any updates) How reproducible: Always Steps to Reproduce: This assumes the following setup: Machine to install ----- Gateway ------ Install server | |-- second router --- Other network On the local network of the machine to install is a DHCP server which hands out two routes, one default gateway (1.2.3.1 in the example) and another router to a private network (router 1.2.3.2 for network 172.16.35.0/24 in the example). The DHCP server has an entry like this: subnet 1.2.3.0 netmask 255.255.255.0 { range 1.2.3.101 1.2.3.127; # the following commented out version would work, # but only provide a default gateway #option routers 1.2.3.1; # the following works with the installed machine, but not with dracut option classless-static-routes 24.172.16.35 1.2.3.2, 0 1.2.3.1; option ms-classless-static-routes 24, 172, 16, 35, 1, 2, 3, 2, 0, 1, 2, 3, 1; } 1. Put a kickstart file on a webserver, e.g. on fedorapeople.org 2. Boot from installation DVD and add the following parameters in boot menu: ks=http://fedorapeople.org/SOMEWHER/ks.cfg (assuming the machine acquires its network configuration from a DHCP server configured as mentioned above). Actual results: The installation fails, on the recovery console verify with "ip route" that the default gateway has not been recognized. Expected results: The dhclient in dracut should properly recognize the default route in the classless static routes case.
Also affects dracut (033-161.el7) in CentOS 7 x86_64 installer.
Expanding on this, it also fails if there are two interfaces with DHCP, one being private with provisioning network access with no gateway and the other being public with installation media, etc...
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