Date: Wed, 18 May 2016 14:11:51 +0000 From: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> To: Grzegorz Junka <list1@gjunka.com> Cc: freebsd-jail@freebsd.org Subject: Re: jails in different private subnets on the same host Message-ID: <AF80A4F2-3605-43A0-81CD-B68659B694C4@lists.zabbadoz.net> In-Reply-To: <faf9e698-baee-f988-df64-5bcda4b1c7c9@gjunka.com> References: <faf9e698-baee-f988-df64-5bcda4b1c7c9@gjunka.com>
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> On 18 May 2016, at 14:00 , Grzegorz Junka <list1@gjunka.com> wrote: >=20 > Is it possible to have two jails on the same host each one in a = different private subnet, e.g. 192.168.1.0 and 10.33.1.0, and have = routing between them working without issues? >=20 > I know it's possible to run jails with IPs in those two subnets but it = seems there is no routing and I am not sure if it's because I can't = configure my router properly or there is a more fundamental problem. One = issue I see is that the jail can't have a different default gateway than = the host, and that for now is 192.168.1.1, but I don't see a reason why = 10.33.1.0 wouldn't be able to use 192.168.1.1 as it's default gateway = provided there is routing between those two subnets. Given they are both on the same base system host, both addresses are = connected locally and thus the kernel knows where to deliver these = packets. If that doesn=E2=80=99t work, there is a bug somewhere. If you want different default gateways then you may want to look into = using different FIBs for different jails. See route(8) and jail(8) for = parameters to set and tune. /bz
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