Public bug reported:
We are trying to migrate our systems from trusty to xenial. There are no
changes to dhcp configurations. On a xenial host, upon running dhclient, the
default route does not get set. However, the other static routes do get set.
I copied /sbin/dhclient-script from a trusty host to the xenial host and
ran dhclient and voila the default route got set.
Version I copied from:
user@host:~$ dpkg -l isc-dhcp-client
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-==========================-==================-==================-=========================================================
ii isc-dhcp-client 4.2.4-7ubuntu12.4 amd64 ISC DHCP
client
AFFECTED VERSION DETAILS
=========================
user@host:/var/lib/dhcp$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.1 LTS
Release: 16.04
Codename: xenial
user@host:/var/lib/dhcp$ dpkg -l isc-dhcp-client
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-==========================-==================-==================-=========================================================
ii isc-dhcp-client 4.3.3-5ubuntu12.1 amd64 DHCP
client for automatically obtaining an IP address
user@host:/var/lib/dhcp$ cat dhclient.leases # some values changed
lease {
interface "ens3";
fixed-address 10.0.0.97;
filename "pxelinux.0";
option subnet-mask 255.255.255.0;
option routers 10.0.0.11;
option dhcp-lease-time 86400;
option dhcp-message-type 5;
option domain-name-servers 127.0.0.1;
option dhcp-server-identifier 10.0.0.1;
option dhcp-renewal-time 43200;
option rfc3442-classless-static-routes
24,10,1,0,10,84,192,66,24,192,168,100,10,0,0,66;
option broadcast-address 10.0.0.255;
option dhcp-rebinding-time 75600;
option host-name "host";
option domain-name "example.com";
renew 3 2016/08/31 16:52:44;
rebind 4 2016/09/01 03:25:21;
expire 4 2016/09/01 06:25:21;
}
** Affects: isc-dhcp (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1618717
Title:
dhclient fails to set default route
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