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Re: Mystery interface reported by ip.

    From: peter@easthope.ca
    Date: Fri, 02 Nov 2018 06:03:42 -0700
> ... will have another look at this and make a better report.

So here is the effective content of /etc/udev/rules.d/70-persistent-net.rules.  
(The definition of collect follows and is in http://easthope.ca/DebianPage.html .)

peter@joule:~$ collect /etc/udev/rules.d/70*
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:1d:7e:00:ee:9f", \
ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="LocLCS1788"
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="e8:94:f6:24:83:52", \
ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="a0:f3:c1:0a:28:f7", \
ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan1"

LocLCS1788 is present and LocLCS218301788 is absent.  Nevertheless, LocLCS218301788 
surfaces here.

peter@joule:~$ ip link show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT
 group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: LocLCS218301788: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DE
FAULT group default qlen 1000
    link/ether 00:07:e9:78:a8:b0 brd ff:ff:ff:ff:ff:ff
3: LocLCS1788: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast sta
te DOWN mode DEFAULT group default qlen 1000
    link/ether 00:1d:7e:00:ee:9f brd ff:ff:ff:ff:ff:ff
4: rename4: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT gr
oup default qlen 1000
    link/ether 00:1d:7e:01:3d:c2 brd ff:ff:ff:ff:ff:ff
5: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DORM
ANT group default qlen 1000
    link/ether e8:94:f6:24:83:52 brd ff:ff:ff:ff:ff:ff

How does the system dredge up LocLCS218301788?  A cache?  Haven't seen 
a mention of wicd caching old device names.  Other ideas?

Thanks,                ... Peter E.

peter@joule:~$ declare -f collect
collect ()
    case $# in
            echo "collect  <filename>"
            egrep -v '(^ *#)|(^ *$)' $1
            echo "Too many arguments."

Message composed and transmitted by software designed to avoid the 
need, overhead and vulnerability of antivirus software.

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