Public bug reported: When booting with ipv6.disable=1, vxlan tunnels will fail to initialize with the error "vxlan: Cannot bind port 4789, err=-97" which is EAFNOSUPPORT.
Expected result is that vxlan tunnels work when ipv6 is disabled. Description: Ubuntu 16.04.4 LTS Release: 16.04 linux-image-4.4.0-124-generic bug is fixed in RHEL in https://bugzilla.redhat.com/show_bug.cgi?id=1445054 Steps to reproduce: Deploy two identical 14.04 nodes with the following configuration: Add the following to /etc/default/grub then run 'sudo update-grub' GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable=1" Reboot both nodes sudo reboot Set up a tunnel using the following commands on each node modifying remote_ip to be the ip of the other node. modify veth0 ip to be subnet using the tunnel 10.10.10.x/24 ovs-vsctl del-port br-int vx1 ovs-vsctl del-port br-int veth1 ip link del veth0 ovs-vsctl add-port br-int vx1 -- set interface vx1 type=vxlan options:remote_ip=192.168.122.161 # remote_ip should be the ip of the other node ip link add type veth ip link set veth0 up ip link set veth1 up ovs-vsctl add-port br-int veth1 ip addr add 10.10.10.2/24 dev veth0 # on the second node use 10.10.10.3/24 Expected result is once the tunnel is configured on each side, you should be able to ping the ip of veth0 on the remote side while ipv6 is disabled. ping 10.10.10.2 or 10.10.10.3, whichever is the remote side. ** Affects: linux (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1771301 Title: Setting ipv6.disable=1 prevents both IPv4 and IPv6 socket opening for VXLAN tunnels To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1771301/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
