Comment 20 for bug 1716964

trusty:

root@vlan-trusty:~# cat /etc/network/interfaces.d/eth0.cfg
# The primary network interface
auto eth0
iface eth0 inet dhcp
  ip-rp-filter 2

root@vlan-trusty:~# dpkg -l | grep vlan
ii vlan 1.9-3ubuntu10.4 amd64 user mode programs to enable VLANs on your ethernet devices
root@vlan-trusty:~# ifdown eth0
Internet Systems Consortium DHCP Client 4.2.4
Copyright 2004-2012 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/eth0/00:16:3e:f7:82:fa
Sending on LPF/eth0/00:16:3e:f7:82:fa
Sending on Socket/fallback
DHCPRELEASE on eth0 to 10.1.255.1 port 67 (xid=0x1bed540d)
root@vlan-trusty:~# ifup eth0
Internet Systems Consortium DHCP Client 4.2.4
Copyright 2004-2012 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/eth0/00:16:3e:f7:82:fa
Sending on LPF/eth0/00:16:3e:f7:82:fa
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0xf32ce957)
DHCPREQUEST of 10.1.255.79 on eth0 to 255.255.255.255 port 67 (xid=0x57e92cf3)
DHCPOFFER of 10.1.255.79 from 10.1.255.1
DHCPACK of 10.1.255.79 from 10.1.255.1
bound to 10.1.255.79 -- renewal in 1747 seconds.
root@vlan-trusty:~# grep . /proc/sys/net/ipv4/conf/*/rp_filter
/proc/sys/net/ipv4/conf/all/rp_filter:1
/proc/sys/net/ipv4/conf/default/rp_filter:1
/proc/sys/net/ipv4/conf/eth0/rp_filter:1
/proc/sys/net/ipv4/conf/lo/rp_filter:1

upgrade vlan to -proposed pkg:

root@vlan-trusty:~# dpkg -l | grep vlan
ii vlan 1.9-3ubuntu10.5 amd64 user mode programs to enable VLANs on your ethernet devices
root@vlan-trusty:~# ifdown eth0
Internet Systems Consortium DHCP Client 4.2.4
Copyright 2004-2012 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/eth0/00:16:3e:f7:82:fa
Sending on LPF/eth0/00:16:3e:f7:82:fa
Sending on Socket/fallback
DHCPRELEASE on eth0 to 10.1.255.1 port 67 (xid=0x22e79e9b)
root@vlan-trusty:~# ifup eth0
Internet Systems Consortium DHCP Client 4.2.4
Copyright 2004-2012 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/eth0/00:16:3e:f7:82:fa
Sending on LPF/eth0/00:16:3e:f7:82:fa
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0x39089e72)
DHCPREQUEST of 10.1.255.79 on eth0 to 255.255.255.255 port 67 (xid=0x729e0839)
DHCPOFFER of 10.1.255.79 from 10.1.255.1
DHCPACK of 10.1.255.79 from 10.1.255.1
bound to 10.1.255.79 -- renewal in 1710 seconds.
root@vlan-trusty:~# grep . /proc/sys/net/ipv4/conf/*/rp_filter
/proc/sys/net/ipv4/conf/all/rp_filter:1
/proc/sys/net/ipv4/conf/default/rp_filter:1
/proc/sys/net/ipv4/conf/eth0/rp_filter:2
/proc/sys/net/ipv4/conf/lo/rp_filter:1