On Sun, Mar 11, 2018 at 05:46:52PM +0000, Grzegorz Junka wrote:
> 
> On 11/03/2018 06:04, Eugene Grosbein wrote:
> > 11.03.2018 7:01, Grzegorz Junka wrote:
> >
> >>> 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"
> > Interfaces meant to be all equal, last line should be:
> >
> > ifconfig_em0_alias1="inet 10.20.2.16/32"
> >
> 
> OK, I see. So this is in case I want many IPs assigned to the same 
> interface. What if I want one IP assigned to multiple interfaces (i.e. 
> so that the additional igb0-3 effectively work as a 4-port switch)?
> 

Please consider bonding all NICs as one bridge(4) interface. Then
multiple IPs could be assigned to such interface.

-- 
Marek Zarychta

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