touch-packages team mailing list archive

[Alejandro Mery <amery@xxxxxxxx>]

this bug is horrible. on environments where DHCP is served by a windows
server there is no way of passing the default gateway via static routes
("rfc3442-classless-static-routes"). it's MS fault, but the client
should be tolerant and notice rfc3442-classless-static-routes doesn't
include a default gateway and use "routes" to fill the gap.

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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-discuss@xxxxxxxxxxxxxxxx>
  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-discuss@xxxxxxxxxxxxxxxx>
  Architecture: amd64

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