[issue39991] test_uuid.test_netstat_getnode() fails on FreeBSD VM: uuid._netstat_getnode() uses IPv6 address as MAC address
STINNER Victor
report at bugs.python.org
Tue Mar 17 07:27:33 EDT 2020
New submission from STINNER Victor <vstinner at python.org>:
My FreeBSD VM has a NIC with the IPv6 address fe80::5054:ff:fe9: local-link IPv6 address. It's used by uuid._netstat_getnode() as a MAC address, but it seems like this IPv6 address doesn't respect RFC 4122 and so should be skipped.
_find_mac_under_heading() should reject IPv6 address: only use MAC address.
vstinner at freebsd$ uname -a
FreeBSD freebsd 12.1-RELEASE-p2 FreeBSD 12.1-RELEASE-p2 GENERIC amd64
======================================================================
FAIL: test_netstat_getnode (test.test_uuid.TestInternalsWithExtModule)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/home/vstinner/python/master/Lib/test/test_uuid.py", line 767, in test_netstat_getnode
self.check_node(node, 'netstat')
File "/usr/home/vstinner/python/master/Lib/test/test_uuid.py", line 736, in check_node
self.assertTrue(0 < node < (1 << 48),
AssertionError: False is not true : fe805054fffe9 is not an RFC 4122 node ID
======================================================================
FAIL: test_netstat_getnode (test.test_uuid.TestInternalsWithoutExtModule)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/home/vstinner/python/master/Lib/test/test_uuid.py", line 767, in test_netstat_getnode
self.check_node(node, 'netstat')
File "/usr/home/vstinner/python/master/Lib/test/test_uuid.py", line 736, in check_node
self.assertTrue(0 < node < (1 << 48),
AssertionError: False is not true : fe805054fffe9 is not an RFC 4122 node ID
It's using a qemu VM run by virt-manager.
fe805054fffe9 seems to be the MAC address of my vtnet network interface:
vstinner at freebsd$ netstat -ian
Name Mtu Network Address Ipkts Ierrs Idrop Opkts Oerrs Coll
vtnet 1500 <Link#1> 52:54:00:9d:0e:67 10017 0 0 8174 0 0
vtnet - fe80::%vtnet0 fe80::5054:ff:fe9 0 - - 4 - -
vtnet - 192.168.122.0 192.168.122.45 8844 - - 8171 - -
lo0 16384 <Link#2> lo0 260148 0 0 260148 0 0
lo0 - ::1/128 ::1 193 - - 193 - -
ff01::1%lo0
ff02::2:2eb7:74fa
ff02::2:ff2e:b774
ff02::1%lo0
ff02::1:ff00:1%lo
lo0 - fe80::%lo0/64 fe80::1%lo0 0 - - 0 - -
ff01::1%lo0
ff02::2:2eb7:74fa
ff02::2:ff2e:b774
ff02::1%lo0
ff02::1:ff00:1%lo
lo0 - 127.0.0.0/8 127.0.0.1 259955 - - 259955 - -
224.0.0.1
----------
components: Tests
messages: 364412
nosy: barry, vstinner
priority: normal
severity: normal
status: open
title: test_uuid.test_netstat_getnode() fails on FreeBSD VM: uuid._netstat_getnode() uses IPv6 address as MAC address
versions: Python 3.9
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<https://bugs.python.org/issue39991>
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