I've done some further tests after boot-time.
$ cat /etc/udev/rules.d/70-persistent-net.rules
# This file was automatically generated by the /lib/udev/write_net_rules
# program, run by the persistent-net-generator.rules rules file.
#
# You can modify it, as long as you keep each rule on a single
# line, and change only the value of the NAME= key.
# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*",
ATTR{address}=="00:25:22:75:e6:9e", ATTR{dev_id}=="0x0", ATTR{type}=="1",
KERNEL=="eth*", NAME="eth0"
# PCI device 0x8086:0x10bc (e1000e)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*",
ATTR{address}=="00:15:17:8f:99:c0", ATTR{dev_id}=="0x0", ATTR{type}=="1",
KERNEL=="eth*", NAME="eth1"
# PCI device 0x8086:0x10bc (e1000e)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*",
ATTR{address}=="00:15:17:8f:99:c1", ATTR{dev_id}=="0x0", ATTR{type}=="1",
KERNEL=="eth*", NAME="eth2"
# PCI device 0x8086:0x10bc (e1000e)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*",
ATTR{address}=="00:15:17:8f:99:c2", ATTR{dev_id}=="0x0", ATTR{type}=="1",
KERNEL=="eth*", NAME="eth3"
# PCI device 0x8086:0x10bc (e1000e)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*",
ATTR{address}=="00:15:17:8f:99:c3", ATTR{dev_id}=="0x0", ATTR{type}=="1",
KERNEL=="eth*", NAME="eth4"
$ inotifywatch -m /etc/udev/rules.d/
$ service udev restart
/etc/udev/rules.d/ OPEN,ISDIR
/etc/udev/rules.d/ CLOSE_NOWRITE,CLOSE,ISDIR
/etc/udev/rules.d/ OPEN 70-persistent-net.rules
/etc/udev/rules.d/ ACCESS 70-persistent-net.rules
/etc/udev/rules.d/ CLOSE_NOWRITE,CLOSE 70-persistent-net.rules
$ ifconfig -a | grep '^eth'
eth0 Link encap:Ethernet HWaddr 00:15:17:8f:99:c1 # rules say eth2
eth1 Link encap:Ethernet HWaddr 00:15:17:8f:99:c0 # rules say eth1
eth2 Link encap:Ethernet HWaddr 00:25:22:75:e6:9e # rules say eth0
eth3 Link encap:Ethernet HWaddr 00:15:17:8f:99:c3 # rules say eth4
eth4 Link encap:Ethernet HWaddr 00:15:17:8f:99:c2 # rules say eth3
$ udevadm monitor --kernel --udev --property --subsystem-match=net | tee
/tmp/udev.log
$udevadm trigger action=add subsystem-match=net
Attached "udev.log" containing monitor output.
** Attachment added: "udevadm monitor output"
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1235162/+attachment/3860722/+files/udev.log
** Summary changed:
- Persistent net names via /etc/udev/rules.d/70-persistent-net.rules
+ Persistent net names via /etc/udev/rules.d/70-persistent-net.rules are ignored
** Changed in: systemd (Ubuntu)
Importance: Undecided => High
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https://bugs.launchpad.net/bugs/1235162
Title:
Persistent net names via /etc/udev/rules.d/70-persistent-net.rules are
ignored
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