def test_task08(riot_ctrl, log_nodes):
node = riot_ctrl(0, APP, Shell, port=TAP)
host_netif = bridge(TAP)
host_lladdr = get_link_local(host_netif)
node_netifs = NETIF_PARSER.parse(node.ifconfig_list())
node_netif = next(iter(node_netifs))
node_hwaddr = node_netifs[node_netif]["hwaddr"]
node_lladdr = [
addr["addr"] for addr in node_netifs[node_netif]["ipv6_addrs"]
if addr["scope"] == "link"
][0]
ip_addr_add(host_netif, "beef::1/64")
ip_route_add(host_netif, "affe::/64", node_lladdr)
node.nib_route_add(node_netif, "beef::/64", host_lladdr)
node.nib_route_add(node_netif, "affe::/64", "fe80::ab25:f123")
pkt = srp1(Ether(dst=node_hwaddr) /
IPv6(src="beef::1", dst="affe::1", hlim=1) / UDP(dport=48879),
iface=host_netif,
timeout=5,
verbose=log_nodes)
assert ICMPv6TimeExceeded in pkt
assert pkt[ICMPv6TimeExceeded].code == 0
assert pkt[IPv6].src == node_lladdr
def test_task09(riot_ctrl, log_nodes):
node = riot_ctrl(0, APP, Shell, port=TAP)
host_netif = bridge(TAP)
host_lladdr = get_link_local(host_netif)
node_netifs = NETIF_PARSER.parse(node.ifconfig_list())
node_netif = next(iter(node_netifs))
node_hwaddr = node_netifs[node_netif]["hwaddr"]
node_lladdr = [
addr["addr"] for addr in node_netifs[node_netif]["ipv6_addrs"]
if addr["scope"] == "link"
][0]
ip_addr_add(host_netif, "beef::1/64")
ip_route_add(host_netif, "affe::/64", node_lladdr)
node.nib_route_add(node_netif, "beef::/64", host_lladdr)
node.nib_route_add(node_netif, "affe::/64", "fe80::ab25:f123")
pkt = srp1(Ether(dst=node_hwaddr) /
IPv6(src="beef::1", dst="affe::1", plen=20) / UDP(dport=48879),
iface=host_netif,
timeout=5,
verbose=log_nodes)
assert ICMPv6ParamProblem in pkt
assert pkt[ICMPv6ParamProblem].code == 0
err_bytes = raw(pkt[IPerror6])
ptr = pkt[ICMPv6ParamProblem].ptr
# plen is a 2 byte field in network byte order (big endian)
ptr_val = (err_bytes[ptr] << 8) | err_bytes[ptr + 1]
assert ptr_val == 20
assert pkt[IPv6].src == node_lladdr
def test_task07(riot_ctrl, log_nodes):
node = riot_ctrl(0,
APP,
Shell,
cflags="-DCONFIG_GNRC_IPV6_NIB_SLAAC=1 "
"-DCONFIG_GNRC_IPV6_NIB_QUEUE_PKT=1",
termflags="-z [::]:17755",
modules="socket_zep netdev_tap",
port=TAP)
host_netif = bridge(TAP)
host_lladdr = get_link_local(host_netif)
time.sleep(5)
node_netifs = NETIF_PARSER.parse(node.ifconfig_list())
node_netif = [n for n in node_netifs if node_netifs[n]["mtu"] == 1500][0]
fwd_netif = [n for n in node_netifs if node_netifs[n]["mtu"] < 1500][0]
node_hwaddr = node_netifs[node_netif]["hwaddr"]
node_lladdr = [
addr["addr"] for addr in node_netifs[node_netif]["ipv6_addrs"]
if addr["scope"] == "link"
][0]
ip_addr_add(host_netif, "beef::1/64")
ip_route_add(host_netif, "affe::/64", node_lladdr)
node.nib_route_add(node_netif, "beef::/64", host_lladdr)
node.nib_route_add(fwd_netif, "affe::/64", "fe80::ab25:f123")
pkt = srp1(Ether(dst=node_hwaddr) / IPv6(src="beef::1", dst="affe::1") /
UDP(dport=48879) / ("x" * 1452),
iface=host_netif,
timeout=5,
verbose=log_nodes)
assert ICMPv6PacketTooBig in pkt
assert pkt[ICMPv6PacketTooBig].code == 0
assert node_netifs[fwd_netif]["mtu"] == pkt[ICMPv6PacketTooBig].mtu == 1280
assert pkt[IPv6].src == node_lladdr