Sunday, December 13, 2009

IPv6 on Karmic Koala

Ubuntu version prior to Karmic Koala use tspc to create an IPv6 tunnel. In Karmic this has been replaced with gw6c, and the configuration file is similar but not exactly the same. For reference, here is my /etc/gw6c/gw6c.conf which uses the Aarnet tunnel broker in Australia.

This is mostly the sample configuration file, with the changed bits in italics.
userid=dparrish
passwd=********
server=broker.aarnet.net.au
auth_method=any
host_type=router
if_tunnel_v6v4=sit1
if_tunnel_v6udpv4=tun0
if_tunnel_v4v6=
prefixlen=64
if_prefix=eth0
auto_retry_connect=yes
retry_delay=30
retry_delay_max=300
keepalive=yes
keepalive_interval=30
tunnel_mode=v6anyv4
client_v4=auto
client_v6=auto
template=linux
proxy_client=no
broker_list=/var/lib/gw6c/tsp-broker-list.txt
last_server=/var/lib/gw6c/tsp-last-server.txt
always_use_same_server=no
log_stderr=0
log_file=2
log_filename=/var/log/gw6c/gw6c.log
log_rotation=yes
log_rotation_size=32
log_rotation_delete=no
syslog_facility=USER


After you have saved this file, run service gw6c restart to start the daemon. You can then check for your new IPv6 address using ip addr ls tun0.

If you want to enable firewalling on this tunnel (HIGHLY RECOMMENDED), you can use the following two files:
  • linux.sh - Copy to /usr/share/gw6c/template/linux.sh and chmod 755
  • firewall.sh - Copy to /etc/gw6c/firewall.sh and chmod 755


You should also edit firewall.sh to allow/disallow what you want. By default, this script allows ssh in to any machines behind your router, and any packets out from internal machines.

EDIT: If gw6c fails to start and doesn't give any useful information at all, try copying /usr/share/gw6c/template/linux.sh to /var/lib/gw6c/template/linux.sh.

Friday, June 12, 2009

What's going on



This is a quick test post to let people know what's going on in my life.

I'm working for Google as a Site Reliability Engineer. I recently bought a new R1 (the motorbike).

Thursday, February 19, 2009

Dbackup 1.2.0

It's been quite a long time since the last release, and during that time I had a nasty crash that took out my server including git repository. However, backups come to the rescue and dbackup is available again. Announcing version 1.2.0, which includes:

  • Updated documentation for each application

  • Changed the protocol to include flags on a list

  • Added the dry_run flag to restore

  • Some bug fixes and performance enhancements


Along with the new version comes a move to Google Code, sitting side-by-side with libcli and rollout. You can find the code now at http://code.google.com/p/dbackup.

The latest release is available as a tarball only, at http://dbackup.googlecode.com/files/dbackup-1.2.0.tar.gz.

Thursday, February 5, 2009

I LEGO N.Y.

This guy has put together some amazing lego creations that remind him of New York. No wait... They aren't amazing, but they are quite funny.

http://niemann.blogs.nytimes.com/2009/02/02/i-lego-ny/?em


Not to scale.