begin networking

network/README

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+The network base - experimental
+
+
+We want to have 1 "main" network for convience.
+
+We want to be able to create networks automatically, once a new
+customer is created -> need hooks!
+
+
+Mapping:
+
+- each network is a "virtual" network. We use vxlan by default, but
+  could be any technology!
+- we need a counter for vxlan mappings / network IDs -> cannot use
+
+Model in etcd:
+
+/v1/networks/
+
+
+Tests
+see
+https://vincent.bernat.ch/en/blog/2017-vxlan-linux
+
+
+#    local 2001:db8:1::1 \
+
+
+netid=100
+dev=wlp2s0
+dev=wlp0s20f3
+ip -6 link add vxlan${netid} type vxlan \
+    id ${netid} \
+    dstport 4789 \
+    group ff05::${netid} \
+    dev ${dev} \
+    ttl 5
+
+[root@diamond ~]# ip addr add 2a0a:e5c0:5::1/48 dev vxlan100
+root@manager:~/.ssh# ip addr add 2a0a:e5c0:5::2/48 dev vxlan100
+root@manager:~/.ssh# ping -c3 2a0a:e5c0:5::1
+PING 2a0a:e5c0:5::1(2a0a:e5c0:5::1) 56 data bytes
+64 bytes from 2a0a:e5c0:5::1: icmp_seq=1 ttl=64 time=15.6 ms
+64 bytes from 2a0a:e5c0:5::1: icmp_seq=2 ttl=64 time=30.3 ms
+64 bytes from 2a0a:e5c0:5::1: icmp_seq=3 ttl=64 time=84.4 ms
+
+--- 2a0a:e5c0:5::1 ping statistics ---
+3 packets transmitted, 3 received, 0% packet loss, time 2003ms
+rtt min/avg/max/mdev = 15.580/43.437/84.417/29.594 ms
+
+--> work even via wifi
+
+
+--------------------------------------------------------------------------------
+
+Creating a network:
+
+1) part of the initialisation / demo data (?)
+
+We should probably provide some demo sets that can easily be used.

network/create-vxlan-on-dev.sh

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+#!/bin/sh
+
+if [ $# -ne 2 ]; then
+    echo "$0 vxlanid dev"
+    echo "f.i. $0 100 eth0"
+    exit 1
+fi
+
+netid=$1; shift
+dev=$1; shift
+
+ip -6 link add vxlan${netid} type vxlan \
+    id ${netid} \
+    dstport 4789 \
+    group ff05::${netid} \
+    dev ${dev} \
+    ttl 5