I don't know how to downgrade the kernel. This is Ubuntu 16.04.1 LTS (GNU/Linux 4.4.0-45-generic x86_64)
I always use apt-get -y update and apt-get -y dist-upgrade On Wed, Nov 9, 2016 at 2:22 AM, Janjaap Bos <janjaap...@gmail.com> wrote: > Downgrade the kernel to verify your guess, as the other feedback you got > also points to the kernel. If that solves it, go file a kernel bug. > > 2016-11-09 7:33 GMT+01:00 Saint Michael <vene...@gmail.com>: > >> It was working fine until a week ago. >> I have two sites, it happened on both, so the issue is not on my router >> or my switch, since they are different sites and we did not upgrade >> anything. >> Ubuntu 16.04.1 LTS (GNU/Linux 4.4.0-45-generic x86_64) >> LXC installed from apt-get install lxc1 >> iptables off in both hosts and containers. I protect my network at the >> perimeter. >> >> All my container networking is defined >> >> lxc.network.type=macvlan >> lxc.network.macvlan.mode=bridge >> lxc.network.link=eth1 >> lxc.network.name = eth0 >> lxc.network.flags=up >> lxc.network.hwaddr = XX:XX:XX:XX:XX:XX >> lxc.network.ipv4 = 0.0.0.0/24 >> >> Now suppose I have a machine, not a container, in the same broadcast >> domain as the containers, same subnet. >> It cannot ping or ssh into a container, which is accessible from outside >> my network. >> However, from inside the container the packets come and go perfectly, >> when the connection is originated by the container. >> A container can ping that host I mentioned, but the host cannot ping back >> the container. >> It all started a few days ago. >> Also, from the host, this test works >> arping -I eth0 (container IP address) >> it shows that we share the same broadcast domain. >> >> My guess is that the most recent kernel update in the LXC host, is >> blocking the communication to the containers, but it allows connections >> from the containers or connections from IP addresses not on the same >> broadcast domain. >> Any idea? >> >> _______________________________________________ >> lxc-users mailing list >> lxc-users@lists.linuxcontainers.org >> http://lists.linuxcontainers.org/listinfo/lxc-users >> > > > _______________________________________________ > lxc-users mailing list > lxc-users@lists.linuxcontainers.org > http://lists.linuxcontainers.org/listinfo/lxc-users >
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