Date: Thu, 22 Apr 2021 17:27:27 +0700 From: Eugene Grosbein <eugen@grosbein.net> To: Peter Blok <pblok@bsd4all.org>, freebsd-hackers@freebsd.org Subject: Re: 32-bit jail on 64-bit host Message-ID: <98b59e11-dc6b-9ae9-c233-204b82521ee2@grosbein.net> In-Reply-To: <F9E8A7E3-C041-49C6-93E3-F44CB83A0858@bsd4all.org> References: <F9E8A7E3-C041-49C6-93E3-F44CB83A0858@bsd4all.org>
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22.04.2021 15:36, Peter Blok wrote: > Hi, > > I have created a 32-bit jail on a 64-bit running 12-STABLE. The jail is also build using the same source. > > The jail gives me a 32-bit environment. I’m getting an IP address and I can ping others on the same network segment. > > But I can’t set a default route. > > route add default 192.168.1.1 > route: writing to routing socket: Invalid argument > add net default: gateway 192.168.1.1 fib 0: Invalid argument > > # netstat -rn > Routing tables > (0) (0) UH > (0) (0) U > (0) (0) UHS > (0) (0) UH > (0) (0) U > (0) (0) UHS > > # ifconfig -a > lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384 > options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6> > inet6 ::1 prefixlen 128 > inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 > inet 127.0.0.1 netmask 0xff000000 > groups: lo > nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> > e0b_websip: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 > options=8<VLAN_MTU> > ether 0e:88:d7:20:99:80 > hwaddr 02:80:ad:6e:79:0b > inet 192.168.1.205 netmask 0xffffff00 broadcast 192.168.1.255 > groups: epair > media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>) > status: active > nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> > > Any idea how to fix this? You will have to put in jail ABI-compatible userland utilities that talk with a kernel directly. This means 64 bit versions of binaries like route, ipfw, maybe netstat etc. You should not assume and use jail as virtual machine, it is not. It is a container for a set of processes sharing same kernel with other jails. If you need full-blown virtual machine, use bhyve.
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