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Subject: Re: Incorrect route interface
To: Grzegorz Junka <list1@gjunka.com>, freebsd-net@freebsd.org
References: <9dd657bc-ad58-f5cb-327a-572a561f1d6b@gjunka.com>
From: Eugene Grosbein <eugen@grosbein.net>
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Date: Sun, 11 Mar 2018 05:43:21 +0700
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11.03.2018 5:01, Grzegorz Junka wrote:

> In rc.conf I have:
> 
> hostname="some.server.com"
> ifconfig_em0="inet 10.20.2.14 netmask 255.255.0.0"
> ifconfig_em1="inet 10.20.2.15 netmask 255.255.0.0"
> ifconfig_igb0="inet 10.20.2.16 netmask 255.255.0.0"

Just do not assign addresses from same network 10.20.0.0/16 to different network interfaces
and you will be fine. Assign them all to right interface:

ifconfig_em0="inet 10.20.2.14 netmask 255.255.0.0"
ifconfig_em0_alias0="inet 10.20.2.15/32"
ifconfig_igb0_alias0="inet 10.20.2.16/32"

Do not try to use several physical network cards to connect hosts using just one IP network
as generally each card/interface needs distinct IP network to work flawlessly.