Date: Mon, 12 Mar 2018 19:56:14 +0000 From: Grzegorz Junka <list1@gjunka.com> To: freebsd-net@freebsd.org Subject: Re: Incorrect route interface Message-ID: <24596951-6fe8-b308-344d-636fecabe36b@gjunka.com> In-Reply-To: <201803121804.w2CI4SPD079782@pdx.rh.CN85.dnsmgr.net> References: <201803121804.w2CI4SPD079782@pdx.rh.CN85.dnsmgr.net>
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On 12/03/2018 18:04, Rodney W. Grimes wrote: >> On 11/03/2018 20:57, Marek Zarychta wrote: >>> 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. >>> >> Many thanks Eugene and Marek for your suggestions. I will now need to >> decide if I want to fragment the network into subnets or bridge the >> interfaces. >> GregJ > I believe some of the problem you are experincing is addressed > in this differential: > https://reviews.freebsd.org/D14547 > > Your original configuration was(is) valid, just not common, > and I have not seen this done in more than a decade, but it > seems as if rstone@ also has someone doing this "multiple IP's > into same subnet on seperate interfaces". > Thanks for the link. That's interesting. According to this post that configuration shouldn't be valid: https://forums.freenas.org/index.php?threads/multiple-network-interfaces-on-a-single-subnet.20204/
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