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Date:      Sun, 19 Jul 2020 17:19:46 +0000
From:      Grzegorz Junka <list1@gjunka.com>
To:        freebsd-net@freebsd.org
Subject:   No connection between jails
Message-ID:  <19461599-5ec8-ce6f-6f58-ff2abc41e8f9@gjunka.com>

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I have two jails in the same subnet on two different hosts:


HOST1 -- jail1

|

|

HOST2 - jail2


HOST1: 10.70.7.13/16
HOST2: 10.70.70.2/16
jail1: 10.70.5.2/32
jail2: 10.70.7.50/32

Default gateway in the network is 10.70.70.1 but I don't think it 
matters in this issue.


There is network connection between HOST1 and jail2, or HOST 2 and 
jail1, or between any other host in the network and either jail1 or 
jail2, however there is no network connection between jail1 and jail2. 
By network connection I mean exchange of packets, e.g. "telnet 
destination port". Both hosts and the default gateway are connected to 
the same psychical switch.

There is actually more jails on HOST1 but the situation is analogous - 
no connection between jails on HOST1 and any jails on HOST2.

What am I missing?


Both hosts have gateway_enable="YES" in rc.conf (net.inet.ip.forwarding: 
1). I am not using VNET, jails are aliased directly in host's network 
interfaces (lagg0 for HOST1 and em0 for HOST2).

Thanks

GrzegorzJ




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