1
0
mirror of https://passt.top/passt synced 2024-12-22 21:55:22 +00:00
passt/test/two_guests/basic
David Gibson 53176ca91d test: Wait for DAD on DHCPv6 addresses
After running dhclient -6 we expect the DHCPv6 assigned address to be
immediately usable.  That's true with the Fedora dhclient-script (and the
upstream ISC DHCP one), however it's not true with the Debian
dhclient-script.  The Debian script can complete with the address still
in "tentative" state, and the address won't be usable until Duplicate
Address Detection (DAD) completes.  That's arguably a bug in Debian (see
link below), but for the time being we need to work around it anyway.

We usually get away with this, because by the time we do anything where the
address matters, DAD has completed.  However, it's not robust, so we should
explicitly wait for DAD to complete when we get an DHCPv6 address.

Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1085231

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2024-10-18 20:27:51 +02:00

85 lines
3.5 KiB
Plaintext

# SPDX-License-Identifier: GPL-2.0-or-later
#
# PASST - Plug A Simple Socket Transport
# for qemu/UNIX domain socket mode
#
# PASTA - Pack A Subtle Tap Abstraction
# for network namespace/tap device mode
#
# test/two_guests/basic - Check basic functionality with two guests
#
# Copyright (c) 2021 Red Hat GmbH
# Author: Stefano Brivio <sbrivio@redhat.com>
g1tools ip jq dhclient socat cat
g2tools ip jq dhclient socat cat
htools ip jq
test Interface names
g1out IFNAME1 ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
g2out IFNAME2 ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
hout HOST_IFNAME ip -j -4 route show|jq -rM '[.[] | select(.dst == "default").dev] | .[0]'
hout HOST_IFNAME6 ip -j -6 route show|jq -rM '[.[] | select(.dst == "default").dev] | .[0]'
check [ -n "__IFNAME1__" ]
check [ -n "__IFNAME2__" ]
test DHCP: addresses
guest1 ip link set dev __IFNAME1__ up
guest1 /sbin/dhclient -4 __IFNAME1__
guest2 ip link set dev __IFNAME2__ up
guest2 /sbin/dhclient -4 __IFNAME2__
g1out ADDR1 ip -j -4 addr show|jq -rM '.[] | select(.ifname == "__IFNAME1__").addr_info[0].local'
g2out ADDR2 ip -j -4 addr show|jq -rM '.[] | select(.ifname == "__IFNAME2__").addr_info[0].local'
hout HOST_ADDR ip -j -4 addr show|jq -rM '.[] | select(.ifname == "__HOST_IFNAME__").addr_info[0].local'
check [ "__ADDR1__" = "__HOST_ADDR__" ]
check [ "__ADDR2__" = "__HOST_ADDR__" ]
test DHCPv6: addresses
# Link is up now, wait for DAD to complete
guest1 while ip -j -6 addr show tentative | jq -e '.[].addr_info'; do sleep 0.1; done
guest2 while ip -j -6 addr show tentative | jq -e '.[].addr_info'; do sleep 0.1; done
guest1 /sbin/dhclient -6 __IFNAME1__
guest2 /sbin/dhclient -6 __IFNAME2__
# Wait for DAD to complete on the DHCP address
guest1 while ip -j -6 addr show tentative | jq -e '.[].addr_info'; do sleep 0.1; done
guest2 while ip -j -6 addr show tentative | jq -e '.[].addr_info'; do sleep 0.1; done
g1out ADDR1_6 ip -j -6 addr show|jq -rM '[.[] | select(.ifname == "__IFNAME1__").addr_info[] | select(.prefixlen == 128).local] | .[0]'
g2out ADDR2_6 ip -j -6 addr show|jq -rM '[.[] | select(.ifname == "__IFNAME2__").addr_info[] | select(.prefixlen == 128).local] | .[0]'
hout HOST_ADDR6 ip -j -6 addr show|jq -rM '[.[] | select(.ifname == "__HOST_IFNAME6__").addr_info[] | select(.scope == "global" and .deprecated != true).local] | .[0]'
check [ "__ADDR1_6__" = "__HOST_ADDR6__" ]
check [ "__ADDR2_6__" = "__HOST_ADDR6__" ]
test TCP/IPv4: guest 1 > guest 2
g1out GW1 ip -j -4 route show|jq -rM '.[] | select(.dst == "default").gateway'
guest2b socat -u TCP4-LISTEN:10004 OPEN:msg,create,trunc
guest1 echo "Hello_from_guest_1" | socat -u STDIN TCP4:__GW1__:10004
guest2w
sleep 1
g2out MSG2 cat msg
check [ "__MSG2__" = "Hello_from_guest_1" ]
test TCP/IPv6: guest 2 > guest 1
g2out GW2_6 ip -j -6 route show|jq -rM '.[] | select(.dst == "default").gateway'
guest1b socat -u TCP6-LISTEN:10001 OPEN:msg,create,trunc
guest2 echo "Hello_from_guest_2" | socat -u STDIN TCP6:[__GW2_6__%__IFNAME2__]:10001
guest1w
sleep 1
g1out MSG1 cat msg
check [ "__MSG1__" = "Hello_from_guest_2" ]
test UDP/IPv4: guest 1 > guest 2
guest2b socat -u TCP4-LISTEN:10004 OPEN:msg,create,trunc
guest1 echo "Hello_from_guest_1" | socat -u STDIN TCP4:__GW1__:10004
guest2w
sleep 1
g2out MSG2 cat msg
check [ "__MSG2__" = "Hello_from_guest_1" ]
test UDP/IPv6: guest 2 > guest 1
guest1b socat -u TCP6-LISTEN:10001 OPEN:msg,create,trunc
guest2 echo "Hello_from_guest_2" | socat -u STDIN TCP6:[__GW2_6__%__IFNAME2__]:10001
guest1w
sleep 1
g1out MSG1 cat msg
check [ "__MSG1__" = "Hello_from_guest_2" ]