Comment 2 for bug 1544705

Actually, rc.local seems to still work fine on m y test 16.04 server.

As a test, I created a script that simply sends a message to dmesg:

doug@s15:~$ cat doug_test.sh
#!/bin/bash

echo "doug test message..." >> /dev/kmsg

Then I edited /etc/rc.local and added a call to that script:

doug@s15:~$ cat /etc/rc.local
#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

/home/doug/doug_test.sh

exit 0

Then I looked at dmesg after a boot:

doug@s15:~$ dmesg | grep -B 5 -A 5 doug
[ 15.587166] cgroup: new mount options do not match the existing superblock, will be ignored
[ 16.720267] cgroup: new mount options do not match the existing superblock, will be ignored
[ 16.804082] r8169 0000:03:00.0 enp3s0: link up
[ 16.804569] br0: port 1(enp3s0) entered forwarding state
[ 16.804575] br0: port 1(enp3s0) entered forwarding state
[ 21.767286] doug test message...
[ 22.080244] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 22.509391] nf_conntrack version 0.5.0 (65536 buckets, 262144 max)
[ 23.733566] audit_printk_skb: 9 callbacks suppressed
[ 23.733569] audit: type=1400 audit(1458402069.319:15): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/bin/lxc-start" pid=1816 comm="apparmor_parser"
[ 23.898393] audit: type=1400 audit(1458402069.487:16): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="lxc-container-default" pid=1819 comm="apparmor_parser"

But notice, how and because my server has virtualization installed, there is some ip_tables stuff right after my message, which might clobber anything I did for iptables in rc.local.

I'm not sure there is a serverguide documentation issue here, although I admit I wouldn't do it that way.