title: Ping timeout issues
body: <p>Good afternoon,</p>
  
  <p>I'm working on a three computers (under Linux Mint 14) LAN. They are connected to a switch and none of them have any firewall. 
  The problem is that each one of them is really slow to detect failures of one of their peers.</p>
  
  <p>For example, I proceed to that test :
  I ping from 192.168.0.2 to 192.168.0.3. After 10 seconds, I unplung 192.168.0.3 from the switch... the problem is that 192.168.0.2 takes 48 seconds to detect that !
  Here you'll finds logs of that test</p>
  
  <pre><code>oneadmin@192.168.0.2 ~ $ ping -v -i 1 192.168.0.3
  PING 192.168.0.3 (192.168.0.3) 56(84) bytes of data.
  64 bytes from 192.168.0.3: icmp_req=1 ttl=64 time=0.233 ms
  64 bytes from 192.168.0.3: icmp_req=2 ttl=64 time=0.236 ms
  64 bytes from 192.168.0.3: icmp_req=3 ttl=64 time=0.220 ms
  64 bytes from 192.168.0.3: icmp_req=4 ttl=64 time=0.229 ms
  64 bytes from 192.168.0.3: icmp_req=5 ttl=64 time=0.233 ms
  64 bytes from 192.168.0.3: icmp_req=6 ttl=64 time=0.210 ms
  64 bytes from 192.168.0.3: icmp_req=7 ttl=64 time=0.271 ms
  64 bytes from 192.168.0.3: icmp_req=8 ttl=64 time=0.273 ms
  64 bytes from 192.168.0.3: icmp_req=9 ttl=64 time=0.291 ms
  64 bytes from 192.168.0.3: icmp_req=10 ttl=64 time=0.201 ms
  From 192.168.0.2 icmp_seq=58 Destination Host Unreachable
  From 192.168.0.2 icmp_seq=59 Destination Host Unreachable
  From 192.168.0.2 icmp_seq=60 Destination Host Unreachable
  From 192.168.0.2 icmp_seq=61 Destination Host Unreachable
  From 192.168.0.2 icmp_seq=62 Destination Host Unreachable
  From 192.168.0.2 icmp_seq=63 Destination Host Unreachable
  From 192.168.0.2 icmp_seq=64 Destination Host Unreachable
  From 192.168.0.2 icmp_seq=65 Destination Host Unreachable
  From 192.168.0.2 icmp_seq=66 Destination Host Unreachable
  From 192.168.0.2 icmp_seq=67 Destination Host Unreachable
  From 192.168.0.2 icmp_seq=68 Destination Host Unreachable
  From 192.168.0.2 icmp_seq=69 Destination Host Unreachable
  </code></pre>
  
  <p>What shall I do to reduce that time?</p>
  
  <p>Best regards,
  Sonsolès</p>