Re: bridge / ubuntu / no arp reply

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On 25.02.2014 22:45, François Chenais wrote:
Hello

I'm trying to setup a bridged guest on an ubuntu 13.10 but it doesn't work.

(Everything is ok with NAT)

Network sniffing shows that arp replies don't come back to the guest.


Test 1
------

Guest : ping host_bridge_ip   (ok)



Test 2
------

Guest: ping other_lan_host (KO)

      other_lan_host

             - receives arp who-is request
             - sends arp reply
             - arp -a   shows the guest macaddr


      => Guest doesn't receive reply


Test 3
------

other_lan_host ping the Guest   (KO)

    - arp -a shows "incomplete" addr
    - Guest receives nothing


On Host
-------

network tcpdump on bridge or vnet interfaces shows request but no reply ...


Thanks in advance for help or ideas


     François


I suspect firewall. By my experience 99% of network issues is caused by firewall. Try flushing all tables and see if that helps.

Michal

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