Re: linux debian jail - network problems

From: Sami Halabi <sodynet1_at_gmail.com>
Date: Fri, 25 Feb 2022 06:34:57 UTC
Hi,
Thank you for your response.. I wonder if Is it really only netlink problem?
Their are fee problems in the logs.. I dont kbow if they all related only
to netlink (prctl immutable for example).. I also saw oncompatibilities in
socket.c ....

Btw: I tried to enter the link you sent and it asked for username and
password.. its not public review?

Sami

בתאריך יום ו׳, 25 בפבר׳ 2022, 04:18, מאת Zhenlei Huang ‏<
zlei.huang@gmail.com>:

> Hi,
> You can also track the WIP netlink feature,
> https://reviews.freebsd.org/D33975
>
> On Feb 25, 2022, at 4:05 AM, Sami Halabi <sodynet1@gmail.com> wrote:
>
> Hi,
> Added Current, maybe will be lucky ;)
>
> Anyone have idea how approach and fix this?
>
> Sami
>
> בתאריך יום ג׳, 22 בפבר׳ 2022, 23:30, מאת Sami Halabi ‏<sodynet1@gmail.com
> >:
>
>> Hi all,
>> sorry for the cross post but I need help and I'm not sure where it hangs.
>>
>> I create linux jail (debian bullseye) via cbsd.
>> the jail is being populated with the debian userland..
>> so far so good... services running (sshd) and I can login to the jail, I
>> also can update packages and I can install apache httpd and all works fine
>> (apt install or make from src).
>> I also manage to install packages even if their scripts depend on "ip"
>> command that fails:
>> cbsd@j2> ip
>> Cannot open netlink socket: Address family not supported by protocol
>>
>> ifconfig show empty interfaces:
>> cbsd@j2> ifconfig
>> eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>>         ether 00:50:56:0a:b3:a0  (Ethernet)
>>         RX packets 139798314  bytes 12029597009 (11.2 GiB)
>>         RX errors 0  dropped 0  overruns 0  frame 0
>>         TX packets 26879143  bytes 34400160833 (32.0 GiB)
>>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
>>
>> lo0: flags=4169<UP,LOOPBACK,RUNNING,MULTICAST>  mtu 16384
>>         loop  (Local Loopback)
>>         RX packets 28548  bytes 160312960 (152.8 MiB)
>>         RX errors 0  dropped 0  overruns 0  frame 0
>>         TX packets 28548  bytes 160312960 (152.8 MiB)
>>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
>>
>> I know linux emulation doesn't implement netlink.. so what I do is fake
>> the response by replacing /bin/ip by a bash script that prints the correct
>> IP and fakes some other (needed by packages i Installed):
>> #!/bin/bash
>> if [ "$1" = "-o" ]; then
>> echo "1: eth0 inet 192.168.1.2/24 brd 192.168.1.255 scope global eth0"
>> elif [ "$1" = "route" ]; then
>>         if [ "$2" = "get" ]; then
>>                 echo "8.8.8.8 via  192.168.1.2   dev eth0  src
>> 192.168.1.2  "
>>         else
>>                 echo "default via  192.168.1.2   dev eth0"
>>         fi
>> else
>> echo "1: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state
>> UP qlen 1000"
>> echo "  inet  192.168.1.2  /24 brd  192.168.1.255 scope global eth0"
>>
>>
>> still ifconfig shows no IP... its time to say it a regular jail and *NOT*
>> VNET.
>>
>> *however* package that pull ips via libraries fail..
>> eg: installed bind916 (name) in the logs I see these errors (relevant
>> only):
>> cbsd@j2> service named start
>> Starting domain name service...: namednamed: prctl(PR_SET_DUMPABLE)
>> failed: Invalid argument
>> cbsd@j2>
>>
>>
>> log file shows:
>> 22-Feb-2022 23:11:58.705 general: notice: BIND 9 is maintained by
>> Internet Systems Consortium,
>> 22-Feb-2022 23:11:58.705 general: notice: Inc. (ISC), a non-profit
>> 501(c)(3) public-benefit
>> 22-Feb-2022 23:11:58.705 general: notice: corporation.  Support and
>> training for BIND 9 are
>> 22-Feb-2022 23:11:58.705 general: notice: available at
>> https://www.isc.org/support
>> 22-Feb-2022 23:11:58.705 general: notice:
>> ----------------------------------------------------
>> 22-Feb-2022 23:11:58.705 general: info: found 6 CPUs, using 6 worker
>> threads
>> 22-Feb-2022 23:11:58.705 general: info: using 6 UDP listeners per
>> interface
>> 22-Feb-2022 23:11:58.705 general: info: using up to 21000 sockets
>> 22-Feb-2022 23:11:58.715 general: info: loading configuration from
>> '/etc/bind/named.conf'
>> 22-Feb-2022 23:11:58.715 general: info: reading built-in trust anchors
>> from file '/etc/bind/bind.keys'
>> 22-Feb-2022 23:11:58.715 general: info: looking for GeoIP2 databases in
>> '/usr/share/GeoIP'
>> 22-Feb-2022 23:11:58.715 general: info: using default UDP/IPv4 port
>> range: [1024, 65535]
>> 22-Feb-2022 23:11:58.715 general: info: using default UDP/IPv6 port
>> range: [1024, 65535]
>> 22-Feb-2022 23:11:58.715 network: info: no IPv6 interfaces found
>> 22-Feb-2022 23:11:58.715 general: error: ifiter_getifaddrs.c:79:
>> unexpected error:
>> 22-Feb-2022 23:11:58.715 general: error: getting interface addresses:
>> getifaddrs: Address family not supported by protocol
>> 22-Feb-2022 23:11:58.715 network: warning: not listening on any interfaces
>> *snip*
>> *snip*
>> 22-Feb-2022 23:11:58.735 general: error: socket.c:2405: unexpected error:
>> 22-Feb-2022 23:11:58.735 general: error: setsockopt(50, IP_RECVTOS)
>> failed: Protocol not available
>> 22-Feb-2022 23:11:58.735 general: notice: couldn't add command channel
>> 127.0.0.1#953: permission denied
>> 22-Feb-2022 23:11:58.735 general: error: socket.c:2405: unexpected error:
>> 22-Feb-2022 23:11:58.735 general: error: setsockopt(50, IP_RECVTOS)
>> failed: Protocol not available
>> 22-Feb-2022 23:11:58.735 general: notice: couldn't add command channel
>> 127.0.0.1#953: permission denied
>> 22-Feb-2022 23:11:58.735 zoneload: info: managed-keys-zone: loaded serial
>> 24
>> 22-Feb-2022 23:11:58.735 zoneload: info: zone 0.in-addr.arpa/IN: loaded
>> serial 1
>> 22-Feb-2022 23:11:58.735 general: error: socket.c:2405: unexpected error:
>> 22-Feb-2022 23:11:58.735 general: error: setsockopt(512, IP_RECVTOS)
>> failed: Protocol not available
>> 22-Feb-2022 23:11:58.735 general: error: socket.c:2405: unexpected error:
>> 22-Feb-2022 23:11:58.735 general: error: setsockopt(513, IP_RECVTOS)
>> failed: Protocol not available
>> 22-Feb-2022 23:11:58.745 zoneload: info: zone 255.in-addr.arpa/IN: loaded
>> serial 1
>> 22-Feb-2022 23:11:58.745 zoneload: info: zone j1.royalshells.com/IN:
>> loaded serial 2022022106
>> 22-Feb-2022 23:11:58.745 notify: info: zone j1.royalshells.com/IN:
>> sending notifies (serial 2022022106)
>> 22-Feb-2022 23:11:58.745 general: error: socket.c:2405: unexpected error:
>> 22-Feb-2022 23:11:58.745 general: error: setsockopt(514, IP_RECVTOS)
>> failed: Protocol not available
>> 22-Feb-2022 23:11:58.745 zoneload: info: zone localhost/IN: loaded serial
>> 2
>> 22-Feb-2022 23:11:58.745 general: error: socket.c:2405: unexpected error:
>> 22-Feb-2022 23:11:58.745 general: error: setsockopt(515, IP_RECVTOS)
>> failed: Protocol not available
>> 22-Feb-2022 23:11:58.745 zoneload: info: zone 127.in-addr.arpa/IN: loaded
>> serial 1
>> 22-Feb-2022 23:11:58.745 general: notice: all zones loaded
>> 22-Feb-2022 23:11:58.745 general: notice: running
>> 22-Feb-2022 23:11:58.795 general: error: socket.c:2405: unexpected error:
>> 22-Feb-2022 23:11:58.795 general: error: setsockopt(50, IP_RECVTOS)
>> failed: Protocol not available
>> 22-Feb-2022 23:12:58.811 general: error: ifiter_getifaddrs.c:79:
>> unexpected error:
>> 22-Feb-2022 23:12:58.811 general: error: getting interface addresses:
>> getifaddrs: Address family not supported by protocol
>> 22-Feb-2022 23:12:58.811 network: warning: not listening on any interfaces
>>
>> Any Idea how to fix this??
>>
>> cbsd@j2> named -V
>> BIND 9.16.22-Debian (Extended Support Version) <id:59bfaba>
>> running on Linux x86_64 3.2.0 FreeBSD 12.3-RELEASE-p1 GENERIC
>>
>> installing newer versions
>>
>> I have also problems with dovecot mail package.. but will leave it for now
>>
>> Thanks in advance,
>> Sami
>>
>>
>