In fact, RedHat, Windows, MacOS don't ignore an default routes with classless-static_route option. What about to add an some tunable to have same behavior in Ubuntu? It should be not a hard
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu. https://bugs.launchpad.net/bugs/1465183 Title: ubuntu 15.04 dhcp: option routers and option rfc3442-classless-static- routes Status in isc-dhcp package in Ubuntu: Confirmed Bug description: Hi. Sorry for my bad english. Iam using option rfc3442-classless-static-routes in my dhcp-server. # cat /var/lib/dhcp/dhclient.eth0.leases lease { interface "eth0"; fixed-address 192.168.120.170; option subnet-mask 255.255.255.0; option routers 192.168.120.1; option dhcp-lease-time 86400; option dhcp-message-type 5; option domain-name-servers 192.168.120.1; option dhcp-server-identifier 192.168.120.1; option ntp-servers 192.168.120.1; option rfc3442-classless-static-routes 24,10,125,0,192,168,120,110; option broadcast-address 192.168.120.255; option domain-name "home.xmu"; renew 1 2015/06/15 05:45:48; rebind 1 2015/06/15 17:04:48; expire 1 2015/06/15 20:04:48; } In other operation system: # route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.120.1 0.0.0.0 UG 0 0 0 eth0 10.125.0.0 192.168.120.110 255.255.255.0 UG 0 0 0 eth0 192.168.120.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 In ubuntu 15.04: # route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.125.0.0 192.168.120.110 255.255.255.0 UG 0 0 0 eth0 192.168.120.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 No default gateway!!! # cat /var/lib/dhcp/dhclient.leases lease { interface "eth0"; fixed-address 192.168.120.169; option subnet-mask 255.255.255.0; option routers 192.168.120.1; option dhcp-lease-time 86400; option dhcp-message-type 5; option domain-name-servers 192.168.120.1; option dhcp-server-identifier 192.168.120.1; option ntp-servers 192.168.120.1; option rfc3442-classless-static-routes 24,10,125,0,192,168,120,110; option broadcast-address 192.168.120.255; option domain-name "home.xmu"; renew 1 2015/06/15 07:41:11; rebind 1 2015/06/15 16:57:38; expire 1 2015/06/15 19:57:38; } If i comment option rfc3442-classless-static-routes in my dhcp-server. Default gateway works fine: # route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.120.1 0.0.0.0 UG 0 0 0 eth0 192.168.120.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 # cat /etc/issue Ubuntu 15.04 \n \l # uname -a Linux wp01 3.19.0-20-generic #20-Ubuntu SMP Fri May 29 10:10:47 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux # aptitude show isc-dhcp-client Package: isc-dhcp-client State: installed Automatically installed: no Version: 4.3.1-5ubuntu2.2 Priority: important Section: net Maintainer: Ubuntu Developers <ubuntu-devel-disc...@lists.ubuntu.com> Architecture: amd64 Uncompressed Size: 698 k Depends: libc6 (>= 2.15), libdns-export100, libirs-export91, libisc-export95, debianutils (>= 2.8.2), isc-dhcp-common (= 4.3.1-5ubuntu2.2), iproute2 Suggests: resolvconf, avahi-autoipd, apparmor Provides: dhcp-client # aptitude show isc-dhcp-common Package: isc-dhcp-common State: installed Automatically installed: no Version: 4.3.1-5ubuntu2.2 Priority: important Section: net Maintainer: Ubuntu Developers <ubuntu-devel-disc...@lists.ubuntu.com> Architecture: amd64 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1465183/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
