gluon/package/gluon-client-bridge/luasrc/lib/gluon/upgrade/310-gluon-client-bridge-local-node
Matthias Schiffer f238b01173
gluon-client-bridge: use a veth pair instead of macvlan to connect local-node to br-client
macvlan interfaces never directly exchange traffic with the underlying
interface, but only with other hosts behind the interface. In consequence,
router advertisements from the uradvd running on br-client could never
reach local-node, preventing it from getting an IPv6 address without RAs
from an external radvd. Fix this be replacing the macvlan interface with
a veth pair (with the peer interface in br-client).

As a side effect, this saves about 5KB of flash, as the veth module is
simpler than macvlan.
2017-02-10 10:21:38 +01:00

48 lines
901 B
Lua
Executable File

#!/usr/bin/lua
local site = require 'gluon.site_config'
local sysconfig = require 'gluon.sysconfig'
local uci = require('simple-uci').cursor()
uci:delete('network', 'local_node_dev')
uci:section('network', 'device', 'local_node_dev', {
type = 'veth',
name = 'local-node',
macaddr = site.next_node.mac,
peer_name = 'local-port',
peer_macaddr = sysconfig.primary_mac,
})
local ip4, ip6
if site.next_node.ip4 then
local plen = site.prefix4:match('/%d+$')
ip4 = site.next_node.ip4 .. plen
end
if site.next_node.ip6 then
ip6 = site.next_node.ip6 .. '/128'
end
uci:delete('network', 'local_node')
uci:section('network', 'interface', 'local_node', {
ifname = 'local-node',
proto = 'static',
ipaddr = ip4,
ip6addr = ip6,
})
uci:save('network')
uci:delete('dhcp', 'local_node')
uci:section('dhcp', 'dhcp', 'local_node', {
interface = 'local_node',
ignore = true,
})
uci:save('dhcp')