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Failover IP blocked (ARP)


p133
17-11-2014, 12:21
No idea how i didn't see that...
network 255.255.255.255
should be
NETMASK 255.255.255.255

I hope that fixes it.

heise
17-11-2014, 09:23
I think they should both be having mask 255:255:255:255, but then again I use RHEL clone.

p133
17-11-2014, 08:06
Hello,
i have a dedicted soyoustart server running Ubuntu 14.04.
I have 2 Failover IPs, and one of them keeps getting blocked for arp requests.

This is my /etc/network/interfaces config:
Code:
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
    address x.x.x.x
    netmask 255.255.255.0
    network x.x.x.0
    broadcast x.x.x.255
    gateway x.x.x.254
iface eth0 inet6 static
    address x:x:x:x::
    netmask 64
    post-up /sbin/ip -f inet6 route add x:x:x:x:ff:ff:ff:ff dev eth0
    post-up /sbin/ip -f inet6 route add default via x:x:x:x:ff:ff:ff:ff
    pre-down /sbin/ip -f inet6 route del default via x:x:x:x:ff:ff:ff:ff
    pre-down /sbin/ip -f inet6 route del x:x:x:x:ff:ff:ff:ff dev eth0

auto eth0:0
allow-hotplug eth0:0
iface eth0:0 inet static
address x.x.x.x
network 255.255.255.255
broadcast x.x.x.x

auto eth0:1
allow-hotplug eth0:1
iface eth0:1 inet static
address x.x.x.x
network 255.255.255.255
broadcast x.x.x.x
Just noticed this if i run ifconfig
Code:
eth0:0    Link encap:Ethernet  HWaddr e0:69:95:e5:6d:11  
          inet addr:x.x.x.x  Bcast:x.x.x.x  Mask:255.255.0.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:20 Memory:fe500000-fe520000 

eth0:1    Link encap:Ethernet  HWaddr e0:69:95:e5:6d:11  <<<-- ARP Spammer
          inet addr:x.x.x.x  Bcast:x.x.x.x  Mask:255.0.0.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:20 Memory:fe500000-fe520000
The Failover IP that gets blocked has Mask:255.0.0.0, the other one 255.255.0.0, could this be the problem?