mirror of
https://github.com/kernelkit/infix.git
synced 2026-07-30 20:43:02 +02:00
Joachim Wiberg
fa6023c9c4
Replace BusyBox udhcpc6 with OpenWrt's odhcp6c for improved DHCPv6 functionality and better integration with Router Advertisements (RA). The primary motivation is support for a common ISP deployment scenario where IPv6 addresses are assigned via SLAAC (from Router Advertisements) and DHCPv6 is used in stateless/information-only mode to provide DNS servers and other configuration options. This hybrid RA+DHCPv6 setup is standard practice for many ISPs but was not supported by udhcpc6, which treats RA and DHCPv6 as separate, non-integrated mechanisms. Additional benefits of odhcp6c: - Better IPv6 Prefix Delegation (IA-PD) support with proper handling of delegated prefix lifetimes and renewal - Native integration of RA-provided configuration (DNS servers, routes, addresses) with DHCPv6-provided options - Support for stateless DHCPv6 via information-only mode To verify stateless DHCPv6 integration with SLAAC addresses - the ISP scenario that motivated this migration, a new test case has been added. Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
83 lines
2.8 KiB
Python
Executable File
83 lines
2.8 KiB
Python
Executable File
#!/usr/bin/env python3
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"""DHCPv6 Basic
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Enable a DHCPv6 client and verify it requests an IPv6 lease from a
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DHCPv6 server that is then set on the interface.
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"""
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import infamy
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import infamy.dhcp
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import infamy.iface as iface
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import infamy.route as route
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from infamy.util import until
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def checkrun():
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"""Check DHCPv6 client is running"""
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res = tgtssh.runsh(f"pgrep -f 'odhcp6c.*{port}'")
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return res.returncode == 0
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def check_dns_resolution():
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"""Check if DNS resolution works by pinging FQDN"""
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rc = tgtssh.runsh(f"ping -6 -c1 -w5 {VERIFY}")
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return rc.returncode == 0
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with infamy.Test() as test:
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SERVER = '2001:db8::1'
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CLIENT = '2001:db8::42'
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DOMAIN = 'example.com'
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VERIFY = 'server.' + DOMAIN
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with test.step("Set up topology and attach to target DUT"):
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env = infamy.Env()
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client = env.attach("client", "mgmt")
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tgtssh = env.attach("client", "mgmt", "ssh")
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_, host = env.ltop.xlate("host", "data")
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_, port = env.ltop.xlate("client", "data")
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with infamy.IsolatedMacVlan(host) as netns:
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netns.addip(SERVER, prefix_length=64, proto="ipv6")
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with infamy.dhcp.Server6Dnsmasq(netns,
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start=CLIENT,
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end=CLIENT,
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dns=SERVER,
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domain=DOMAIN,
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address=SERVER):
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with test.step("Configure DHCPv6 client"):
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config = {
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"interfaces": {
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"interface": [{
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"name": f"{port}",
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"ipv6": {
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"enabled": True,
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"infix-dhcpv6-client:dhcp": {
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"option": [
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{"id": "dns-server"},
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{"id": "domain-search"}
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]
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}
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}
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}]
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}
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}
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client.put_config_dict("ietf-interfaces", config)
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with test.step("Verify DHCPv6 client is running"):
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until(checkrun, attempts=10)
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with test.step(f"Verify client lease for {CLIENT}"):
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until(lambda: iface.address_exist(client, port, CLIENT, prefix_length=128), attempts=30)
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with test.step("Verify client default route ::/0"):
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until(lambda: route.ipv6_route_exist(client, "::/0"), attempts=20)
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with test.step("Verify client domain name resolution"):
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# DNS configuration may take a moment, especially on ARM hardware
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until(check_dns_resolution, attempts=20)
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test.succeed()
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