Date: Wed, 14 Jun 2023 10:42:13 +0100 From: Alexander Chernikov <melifaro@FreeBSD.org> To: Benoit Chesneau <benoitc@enki-multimedia.eu> Cc: "freebsd-net@FreeBSD.org" <freebsd-net@freebsd.org> Subject: Re: can't add a /24 blackhole route with a /32 loopback Message-ID: <5747CC08-6903-4E2F-B0A5-D0CAB08F8165@FreeBSD.org> In-Reply-To: <sgx1BljfJfV-Bn0PlfJ0va7yWHE9QraHpTjPBB6jlJWq4aehFwihem8C8f3ikkjvdEGIYY15S3ppTkQpWDfR3LDi_IKewBg7XQ1v9_u3SC4=@enki-multimedia.eu> References: <9Jh8lSg93tjEc0-UEU3MQkGuQc7R9Aht0NBt4kEr6-wtgMdf673nws_jGaHelYwz0U78ik2BM4WLUca2JZAjrX-WSbP5QS4rsvoBHZo_JZo=@enki-multimedia.eu> <4DF565CC-D8AE-4F35-A7CF-7ED5AAD27B49@FreeBSD.org> <t_gT66nRcCT4fte7HbEMcM6J2spH-rEGFNYtZqX0GsUlxW4R5_pEVx3ZqtAwphKT4UBZsGZKX9gxeym1SKdc5GmceXGy1rRYEnSU1X6-_8c=@enki-multimedia.eu> <sgx1BljfJfV-Bn0PlfJ0va7yWHE9QraHpTjPBB6jlJWq4aehFwihem8C8f3ikkjvdEGIYY15S3ppTkQpWDfR3LDi_IKewBg7XQ1v9_u3SC4=@enki-multimedia.eu>
next in thread | previous in thread | raw e-mail | index | archive | help
> On 14 Jun 2023, at 10:06, Benoit Chesneau <benoitc@enki-multimedia.eu> = wrote: >=20 > I forgot oto add the error message , sorry.=20 >=20 > When I try to set the theblackhole flag I get the following error: >=20 > ``` > route: writing to routing socket: Operation not supported > change net 1.1.1.0 fib 0: Operation not supported > ``` Interesting. Could you also share full ifconfig output or at least = ifconfig for each of the loopbacks? If the output contains something you=E2=80=99re not comfortable sharing = in the ML, you could consider sending it directly to my email. >=20 >=20 > ------- Original Message ------- > On Wednesday, June 14th, 2023 at 10:38, Benoit Chesneau = <benoitc@enki-multimedia.eu> wrote: >=20 >=20 >> Hi, >>=20 >> Thanks for your answer. I'm using Freebsd 13.2 latest version: >>=20 >> $ uname -srm >> FreeBSD 13.2-RELEASE amd64 >>=20 >> I edited the filtred result of the table since it has a full view: >>=20 >> netstat -4rnW |grep -e "1.1.1" >> 1.1.1.0/24 127.0.0.1 USB 14 16384 lo0 >> 1.1.1.1 link#9 UHS 26 16384 lo1 >> 1.1.1.2 10.3.1.1 UGH1 15 9000 vlan2212 >> 1.1.1.2 10.3.1.1 UGHS 16 1500 vlan2212 >> 1.1.1.2 10.3.1.1 UGHS 25 9000 vlan2212 >>=20 >>=20 >> Also I forgot to mention that the ethernet driver is MLX4EN(4): >>=20 >> mlx4_core0@pci0:8:0:0: class=3D0x028000 rev=3D0x00 hdr=3D0x00 = vendor=3D0x15b3 device=3D0x1007 subvendor=3D0x103c subdevice=3D0x22f3 >> vendor =3D 'Mellanox Technologies' >> device =3D 'MT27520 Family [ConnectX-3 Pro]' >> class =3D network >> Corrected =3D Advisory Non-Fatal Error >>=20 >>=20 >>=20 >> Hope it helps, >>=20 >>=20 >> Beno=C3=AEt >> ------- Original Message ------- >> On Wednesday, June 14th, 2023 at 10:29, Alexander Chernikov = melifaro@FreeBSD.org wrote: >>=20 >>=20 >>=20 >>>> On 14 Jun 2023, at 07:05, Benoit Chesneau = benoitc@enki-multimedia.eu wrote: >>>>=20 >>>> Hi, >>>>=20 >>>> When I setup a loopback to a /32 , I can add a /24 as a blackhole = route anymore. I can only create a /24 attached to this looopback. Ie. >>>=20 >>> Could you add a bit more context? >>> What is the FreeBSD version (uname -srm)? >>> What does 'route add 1.1.1.0/24 -blackhole=E2=80=99 show? >>> Could you also share netstat -4rnW and ifconfig output (maybe = privately)? >>>=20 >>>> when `lo1` is set to `1.1.1.1/32` I cant create a blackhole route = to `1.1.1.0/24` using the command : `route add 1.1.1.0/24 -blackhole` . = Is there any reason for it? The idea is to be able to advertise the = prefix `1.1.1.0/24` via BGP (bird) and use 1.1.1.1/32` as a loopback = distributed to other nodes using OSPF. I can probably make the loopback = a /24 used by bird but what would be the other way to do it? >>>>=20 >>>> Beno=C3=AEt
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?5747CC08-6903-4E2F-B0A5-D0CAB08F8165>