check-gateway: stop dhcp server if batman gateway modus is off
maintenance: Deactivate radvd and dhcpd really.

When in maintenance it is usual to restart the machine, e.g. after an
kernel update, so we don't want radvd to be started when we are still
in maintenance.
uplink: add to readme
Increase size of neighbour table size for IPv{4,6}
Merge pull request #52 from ohrensessel/v4uplink

add module for ipv4 uplink via gre tunnel and bgp
Merge pull request #71 from ohrensessel/changesysctl

Increase size of neighbour table size for IPv{4,6}
Merge pull request #64 from sargon/dhcp-deactivate

This looks fine to me. I will close the issue #49 after merging this.
Merge branch 'master' into HEAD

Conflicts:
	manifests/vpn.pp
check-gateway: correct rule creation
Merge branch 'rework-checkgw'