Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: iproute2 (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/2018330
Title:
routel script gives shift errors
Status in iproute2 package in Ubuntu:
Confirmed
Bug description:
The routel(8) shell script is meant to format the output of ip(8)
commands for human viewing, but the script is not robust enough.
Running 22.04.2 LTS jammy jellyfish, freshly installed on an AWS EC2
instance and then "apt upgrade"d. (It's headless and remote, so it
can't submit bug reports. I generated an apport file, but have no
other Ubuntu system that could re-parse it to submit the report. But
it's here if it would be useful.) The iproute2 package is:
iproute2:
Installed: 5.15.0-1ubuntu2
Candidate: 5.15.0-1ubuntu2
Version table:
*** 5.15.0-1ubuntu2 500
500 http://us-east-2.ec2.archive.ubuntu.com/ubuntu jammy/main amd64
Packages
100 /var/lib/dpkg/status
Here's the raw output of ip(8):
$ ip route list table 0
default via 10.37.67.1 dev eth0 proto dhcp src 10.37.67.187 metric 100
10.37.64.2 via 10.37.67.1 dev eth0 proto dhcp src 10.37.67.187 metric 100
10.37.64.231 via 10.37.67.1 dev eth0 proto dhcp src 10.37.67.187 metric 100
10.37.65.30 via 10.37.67.1 dev eth0 proto dhcp src 10.37.67.187 metric 100
10.37.67.0/24 dev eth0 proto kernel scope link src 10.37.67.187 metric 100
10.37.67.1 dev eth0 proto dhcp scope link src 10.37.67.187 metric 100
local 10.37.67.187 dev eth0 table local proto kernel scope host src
10.37.67.187
broadcast 10.37.67.255 dev eth0 table local proto kernel scope link src
10.37.67.187
local 127.0.0.0/8 dev lo table local proto kernel scope host src 127.0.0.1
local 127.0.0.1 dev lo table local proto kernel scope host src 127.0.0.1
broadcast 127.255.255.255 dev lo table local proto kernel scope link src
127.0.0.1
::1 dev lo proto kernel metric 256 pref medium
fe80::/64 dev eth0 proto kernel metric 256 pref medium
local ::1 dev lo table local proto kernel metric 0 pref medium
local fe80::458:96ff:fe61:6829 dev eth0 table local proto kernel metric 0
pref medium
multicast ff00::/8 dev eth0 table local proto kernel metric 256 pref medium
Running routel, however, yields this:
$ routel
target gateway source proto scope dev
tbl
default 10.37.67.1 10.37.67.187 dhcp eth0
10.37.64.2 10.37.67.1 10.37.67.187 dhcp eth0
10.37.64.231 10.37.67.1 10.37.67.187 dhcp eth0
10.37.65.30 10.37.67.1 10.37.67.187 dhcp eth0
10.37.67.0/ 24 10.37.67.187 kernel link eth0
10.37.67.1 10.37.67.187 dhcp link eth0
10.37.67.187 local 10.37.67.187 kernel host eth0
local
10.37.67.255 broadcast 10.37.67.187 kernel link eth0
local
127.0.0.0/ 8 local 127.0.0.1 kernel host lo
local
127.0.0.1 local 127.0.0.1 kernel host lo
local
127.255.255.255 broadcast 127.0.0.1 kernel link lo
local
/usr/bin/routel: 48: shift: ::1
kernel lo
fe80::/ 64 kernel eth0
::1 local kernel lo
local
fe80::458:96ff:fe61:6829 local kernel
eth0 local
can't shift that many
Splitting stdout and stderr for readability:
$ routel 2> /tmp/err
target gateway source proto scope dev
tbl
default 10.37.67.1 10.37.67.187 dhcp eth0
10.37.64.2 10.37.67.1 10.37.67.187 dhcp eth0
10.37.64.231 10.37.67.1 10.37.67.187 dhcp eth0
10.37.65.30 10.37.67.1 10.37.67.187 dhcp eth0
10.37.67.0/ 24 10.37.67.187 kernel link eth0
10.37.67.1 10.37.67.187 dhcp link eth0
10.37.67.187 local 10.37.67.187 kernel host eth0
local
10.37.67.255 broadcast 10.37.67.187 kernel link eth0
local
127.0.0.0/ 8 local 127.0.0.1 kernel host lo
local
127.0.0.1 local 127.0.0.1 kernel host lo
local
127.255.255.255 broadcast 127.0.0.1 kernel link lo
local
::1 kernel lo
fe80::/ 64 kernel eth0
::1 local kernel lo
local
fe80::458:96ff:fe61:6829 local kernel
eth0 local
$ cat /tmp/err
/usr/bin/routel: 48: shift: can't shift that many
$
It's giving the same errors as in Debian bug 875476 some six years ago, which
was "fixed in upstream" and then apparently broken again.
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