On Tue, Dec 3, 2013 at 4:15 PM, Matthew Dempsky <matt...@dempsky.org> wrote: > The patch below extends dhclient to mimic this logic from ISC DHCP's > linux script: > > if [ "x$new_subnet_mask" = "x255.255.255.255" ] ; then > route add -host $router dev $interface > fi > route add default gw $router $metric_arg dev $interface
Just for the archive's benefit, I was able to track this down to this RELNOTES entry in ISC DHCP: - The dhclient-script was updated to create a host route for the default gateway if the supplied subnet mask for an IPv4 address was a /32. This allows the client to work in 'captive' network environments, where the operator does not want clients to crosstalk directly. listed under "Changes since 4.0.0 (new features)", which gives a bit more context for the change. I haven't found anything else interesting though, and I've given up hope of finding anything.
