linux debian jail - network problems
- Reply: Sami Halabi : "Re: linux debian jail - network problems"
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Date: Tue, 22 Feb 2022 21:30:21 UTC
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