rancher: Network fails

Rancher versions: rancher/server: v1.6.14 rancher/agent: v1.2.9

Infrastructure Stack versions: healthcheck: v0.3.3-1 ipsec: 0.2.2 network-services: v0.2.8 scheduler: v0.8.3

Docker version: (docker version,docker info preferred)

 Version:      17.06.2-ce
 API version:  1.30
 Go version:   go1.8.3
 Git commit:   cec0b72
 Built:        Tue Sep  5 19:57:21 2017
 OS/Arch:      linux/amd64

Server:
 Version:      17.06.2-ce
 API version:  1.30 (minimum version 1.12)
 Go version:   go1.8.3
 Git commit:   cec0b72
 Built:        Tue Sep  5 19:59:19 2017
 OS/Arch:      linux/amd64
 Experimental: false

Operating system and kernel: (cat /etc/os-release, uname -r preferred)

VERSION=v1.1.3
ID=rancheros
ID_LIKE=
VERSION_ID=v1.1.3
PRETTY_NAME="RancherOS v1.1.3"
HOME_URL="http://rancher.com/rancher-os/"
SUPPORT_URL="https://forums.rancher.com/c/rancher-os"
BUG_REPORT_URL="https://github.com/rancher/os/issues"
BUILD_ID=

Type/provider of hosts: (VirtualBox/Bare-metal/AWS/GCE/DO) Bare-metal

Setup details: (single node rancher vs. HA rancher, internal DB vs. external DB) single node rancher, internal DB

Environment Template: (Cattle/Kubernetes/Swarm/Mesos) Cattle

Steps to Reproduce: Turn on and wait about 12 hours…

Results: Approximately every 12 hours the network falls (Network between servers is always working perfectly): https://discourse-cdn-sjc2.com/standard16/uploads/rancher/original/2X/b/b2b0b4bd6031a68b43113bbd209b002a8fe6ae4c.png

I think the problem is the following: When it breaks, agent on first host changes ip to 172.17.0.1. After reboot it restore to normal ip addr and all works.

At the moment I don’t know why the agent to change the ip and how can I prevent him to do it.

I found the same problems, but none of them have a solution: https://github.com/rancher/rancher/issues/7817