Re: ipv6 only host and no IPV4 in jail?

From: Benoit Chesneau <benoitc_at_enki-multimedia.eu>
Date: Wed, 04 Oct 2023 21:58:25 UTC
It works, over IPv6. I don't get any error. WHen I launch dh-client manually I get an IP. But when setting the if the rc.conf doesn't add an IPv4.

This is odd.



Benoît
------- Original Message -------
On Monday, October 2nd, 2023 at 12:30, felix.reichenberger@tuta.io <felix.reichenberger@tuta.io> wrote:


> Hi,
>
> since your VNET jail has its own network stack, it shouldn't matter that your host is IPv6-only.
> I myself run dual-stack Bastille jails on IPv6-only hosts without any problems.
>
> What kind of errors do you get when trying to access the internet via IPv4 from your jail, and does it work with IPv6?
>
> Regards
>
>
> 2. Okt. 2023, 11:55 von benoitc@enki-multimedia.eu:
>
> > Hi all,
> >
> > I have a weird issue there,
> >
> > I have an ipv6 only host aon which I am starting a jail.Jalil have a vnet interface through a bridge created on the host:
> >
> > For some reason the jail can't get access and is not accessible to internet when I setup an IPV4 on it (and right gateway). Is this something expected? SHould the Host be also IPV4 aware?
> >
> > Host config:
> >
> > Host:
> > ```
> > vlan200bridge: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 9000
> > ether 58:9c:fc:10:fc:41
> > id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
> > maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
> > root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
> > member: e0a_bastille4 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
> > ifmaxaddr 0 port 8 priority 128 path cost 2000
> > member: tap0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
> > ifmaxaddr 0 port 9 priority 128 path cost 2000000
> > member: tap1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
> > ifmaxaddr 0 port 10 priority 128 path cost 2000000
> > member: vlan200 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
> > ifmaxaddr 0 port 6 priority 128 path cost 800
> > groups: bridge
> >
> > e0a_bastille4: flags=8963<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 9000
> > description: vnet host interface for Bastille jail fpcouchdb
> > options=8<VLAN_MTU>
> > ether 02:20:9c:4c:84:f0
> > hwaddr 02:c4:b5:3a:91:0a
> > groups: epair
> > media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
> > status: active
> > nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
> > ```
> >
> > Guest
> >
> > ```
> > # ifconfig vnet0
> > vnet0: flags=8863<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
> > options=8<VLAN_MTU>
> > ether 0e:20:9c:4c:84:f0
> > hwaddr 02:c4:b5:3a:91:0b
> > inet6 XXXX:XXXX:XXXX:200::30 prefixlen 64
> > inet6 fe80::c20:9cff:fe4c:84f0%vnet0 prefixlen 64 scopeid 0x2
> > inet 10.200.1.8 netmask 0xffffff00 broadcast 10.200.1.255
> > groups: epair
> > media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
> > status: active
> > nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
> > # netstat -rn4
> > Routing tables
> >
> > Internet:
> > Destination Gateway Flags Netif Expire
> > default 10.200.1.1 UGS vnet0
> > 10.200.1.0/24 link#2 U vnet0
> > 10.200.1.8 link#2 UHS lo0
> > 127.0.0.1 link#1 UH lo0
> > ```
> >
> > Benoît Chesneau, Enki Multimedia
> > —
> > t. +33608655490
> >
> > Sent with > Proton Mail https://proton.me/> secure email.