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If we run passt nested (a guest connected via passt to a guest
connected via passt to the host), the first guest (L1) typically has
two IPv6 addresses on the same interface: one formed from the prefix
assigned via SLAAC, and another one assigned via DHCPv6 (to match the
address on the host).
When we select addresses for comparison, in this case, we have
multiple global unicast addresses -- again, on the same interface.
Selecting the first reported one on both host and guest is not
entirely correct (in theory, the order might differ), but works
reasonably well.
Use the trick from 5beef08597 ("test: Only select a single
interface or gateway in tests") to ask jq(1) for the first address
returned by the query.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
34 lines
1.3 KiB
Plaintext
34 lines
1.3 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-or-later
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#
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# PASST - Plug A Simple Socket Transport
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# for qemu/UNIX domain socket mode
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#
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# PASTA - Pack A Subtle Tap Abstraction
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# for network namespace/tap device mode
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#
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# test/pasta/ndp - Check DHCP and DHCPv6 functionality in pasta mode
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#
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# Copyright (c) 2021 Red Hat GmbH
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# Author: Stefano Brivio <sbrivio@redhat.com>
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nstools ip jq sipcalc grep cut
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htools ip jq sipcalc grep cut
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test Interface name
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nsout IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
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check [ -n "__IFNAME__" ]
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ns ip link set dev __IFNAME__ up
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sleep 2
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test SLAAC: prefix
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nsout ADDR6 ip -j -6 addr show|jq -rM '[.[] | select(.ifname == "__IFNAME__").addr_info[] | select(.scope == "global" and .prefixlen == 64).local] | .[0]'
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nsout PREFIX6 sipcalc __ADDR6__/64 | grep prefix | cut -d' ' -f4
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hout HOST_ADDR6 ip -j -6 addr show|jq -rM ['.[] | select(.ifname == "__IFNAME__").addr_info[] | select(.scope == "global").local] | .[0]'
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hout HOST_PREFIX6 sipcalc __HOST_ADDR6__/64 | grep prefix | cut -d' ' -f4
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check [ "__PREFIX6__" = "__HOST_PREFIX6__" ]
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test SLAAC: route
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nsout GW6 ip -j -6 route show|jq -rM '.[] | select(.dst == "default").gateway'
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hout HOST_GW6 ip -j -6 route show|jq -rM '[.[] | select(.dst == "default").gateway] | .[0]'
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check [ __GW6__ = __HOST_GW6__ ]
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