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-- example of how to create a vlan using ljsyscall
-- not in the tests as it will mess up your interfaces and as far as I know you can only create vlans on physical interfaces
local nl = require "syscall.nl"
local interface = "eth0"
local vlan = 40
local name = interface .. "." .. tostring(vlan)
local i = assert(nl.interfaces())
local ii = i[interface]
if not ii then
print("cannot find underlying interface")
os.exit(1)
end
-- create
-- equivalent to
-- ip link add link eth0 name eth0.42 type vlan id 40
ok, err = nl.create_interface{name = name, link = ii.index, type = "vlan", id = vlan}
--Equivalent using newlink
--ok, err = nl.newlink(0, "create", 0, 0, "link", ii.index, "ifname", name, "linkinfo", {"kind", "vlan", "data", {"id", vlan}})
if not ok then
print(err)
os.exit(1)
end
i:refresh()
print(i)
ok, err = nl.dellink(0, "ifname", name)
if not ok then
print(err)
os.exit(1)
end
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