Date: Wed, 16 Sep 2020 11:54:27 -0700 From: John-Mark Gurney <jmg@funkthat.com> To: Abelenda Diego <diego.abelenda@gmail.com> Cc: kaycee gb <kisscoolandthegangbang@hotmail.fr>, freebsd-net@freebsd.org Subject: Re: IP "routing" issue Message-ID: <20200916185427.GQ4213@funkthat.com> In-Reply-To: <20200916182141.2705bb70@debian> References: <20200909164254.5e7e3891@debian> <VE1PR03MB5629FC5FAB3212A0987F7F4CA0260@VE1PR03MB5629.eurprd03.prod.outlook.com> <20200910185400.593a8ce2@debian> <20200915191052.GN4213@funkthat.com> <20200916182141.2705bb70@debian>
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Abelenda Diego wrote this message on Wed, Sep 16, 2020 at 18:21 +0200:
> Thank you for your input.
>=20
> Due to how convoluted the change in the configuration of FreeBSD would ha=
ve
> been I had to completely change my infrastructure to match the vision my
> datacenter unilaterally imposed on me... So now I don't have this need an=
ymore.
Ok. Glad you were able to solve your problem, though obviously not the way=
you
wanted to.
Just for the archives, this style of routing should work fine in FreeBSD.
> On Tue, 15 Sep 2020 12:10:52 -0700
> John-Mark Gurney <jmg@funkthat.com> wrote:
>=20
> > Abelenda Diego wrote this message on Thu, Sep 10, 2020 at 18:54 +0200:
> > > Hello,
> > >=20
> > > Thank you for pointing route "-iface" however I can't seem to manage =
what I
> > > want.
> > >=20
> > > When I use:
> > > "route add -host $IP_NOT_IN_SUBNET -iface bce0"
> > >=20
> > > I get "netstat -rn" to say someting like:
> > >=20
> > > Internet:
> > > Destination Gateway Flags Netif Expire
> > > default $UPSTREAM_GW UGS bce0
> > > 10.0.0.1 link#7 UHS lo0
> > > $IP_NO_IN_SUBNET $MAC_ADDRESS_OF_BCE0 UHS bce0
> > >=20
> > >=20
> > > Which seem somehow appropriate, so I try to ping $IP_NOT_IN_SUBNET an=
d I
> > > get:
> > >=20
> > > root@opnsense2:~ # ping $IP_NOT_IN_SUBNET
> > > PING $IP_NOT_IN_SUBNET ($IP_NOT_IN_SUBNET): 56 data bytes
> > > 36 bytes from $UPSTREAM_GW: Redirect Host(New addr: $PUBLIC_IP_OF_BCE=
0).
> > >=20
> > > Which doesn't seem appropriate at all wrt the routing table...
> > >=20
> > > Did I use "route add" wrong?
> > >=20
> > > Also I want to keep the setup simple, going through private IPs on the
> > > public VLAN of the datacenter might get me in trouble with them, and =
using
> > > other VLANs for that will be a pain. =20
> >=20
> > Can you provide a diagram of the network layout, and where the
> > configuration needs to go? Because if it's just the opnsense box that
> > needs the IP addresses, adding them as an alias to bce is enough to
> > make it work.
> >=20
> > If you're trying to do something else, like have boxes behind the
> > opnsense box have those IP addresses, then:
> > route add $IP_NO_IN_SUBNET $IP_OF_BOX_WITH_IP_NO_IN_SUBNET
> >=20
> > would just work.
> >=20
> > I just noticed the 10.0.0.1 IP on lo0, and that's a bit odd to have...
> >=20
> > > On Wed, 9 Sep 2020 17:35:45 +0200
> > > kaycee gb <kisscoolandthegangbang@hotmail.fr> wrote:
> > > =20
> > > > Le Wed, 9 Sep 2020 16:42:54 +0200,
> > > > Abelenda Diego <diego.abelenda@gmail.com> a =E9crit :
> > > > =20
> > > > > Hello,
> > > > >=20
> > > > > I've got a FreeBSD installation in a DataCenter that provided me =
with a
> > > > > single address IPv4 with an upstream gateway (cidr is fine the up=
stream
> > > > > gateway works everything is nice and running). I use this machine=
for
> > > > > Masquerading an private infrastructure.
> > > > >=20
> > > > > Now I need other machines with public IPv4 and when I requested t=
he
> > > > > additional IPv4 to the DataCenter, they gave me a bunch of /32 ad=
dresses
> > > > > saying that my previous IPv4 MUST be configured as next-hop on th=
eir
> > > > > side. From my understanding in FreeBSD the route command is unabl=
e to
> > > > > perform this kind of configuration where you tell that the IPv4 /=
32 is
> > > > > available without next-hop (no via) on a specific link. I know the
> > > > > linux "ip route add $IP dev $LINK" configures this, but I cannot =
seem
> > > > > to map this knowledge to FreeBSD.
> > > > >=20
> > > > > Is it possible to perform this very special setup with any comman=
d on
> > > > > FreeBSD? If yes what is that command?
> > > > >=20
> > > > > Best regards,
> > > > > Diego Abelenda =20
> > > >=20
> > > > Hi,
> > > >=20
> > > > Do the other machines have a private address ? Is it a problem if t=
hey
> > > > have one ?=20
> > > > If it is possible, you can route via this private address on your F=
reeBSD
> > > > installation to the new one and assign a public/32 to the last.
> > > >=20
> > > > Alternatively to doing routing like above, if you have a firewall e=
nabled
> > > > on the first machine, you can do address forwarding between the fir=
st and
> > > > the new one.=20
> > > >=20
> > > > And last, maybe with something like -iface from "route" you can ach=
ieve
> > > > what you want. =20
--=20
John-Mark Gurney Voice: +1 415 225 5579
"All that I will do, has been done, All that I have, has not."
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