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docs: remove NAT rule when removing bridge 

Signed-off-by: imre Fitos <imre.fitos+github@gmail.com>
This commit is contained in:
imre Fitos 2015-01-14 23:06:13 -05:00
parent 640e0fc578
commit d10d0e568e
1 changed files with 9 additions and 0 deletions
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docs/sources/articles/networking.md
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@ -687,6 +687,7 @@ stopping the service and removing the interface:
$ sudo service docker stop $ sudo service docker stop
$ sudo ip link set dev docker0 down $ sudo ip link set dev docker0 down
$ sudo brctl delbr docker0 $ sudo brctl delbr docker0
$ sudo iptables -t nat -F POSTROUTING
Then, before starting the Docker service, create your own bridge and Then, before starting the Docker service, create your own bridge and
give it whatever configuration you want. Here we will create a simple give it whatever configuration you want. Here we will create a simple
@ -708,6 +709,14 @@ illustrate the technique.
inet 192.168.5.1/24 scope global bridge0 inet 192.168.5.1/24 scope global bridge0
valid_lft forever preferred_lft forever valid_lft forever preferred_lft forever
# Confirming outgoing NAT masquerade is setup
$ sudo iptables -t nat -L -n
...
Chain POSTROUTING (policy ACCEPT)
target prot opt source destination
MASQUERADE all -- 192.168.5.0/24 0.0.0.0/0
# Tell Docker about it and restart (on Ubuntu) # Tell Docker about it and restart (on Ubuntu)
$ echo 'DOCKER_OPTS="-b=bridge0"' >> /etc/default/docker $ echo 'DOCKER_OPTS="-b=bridge0"' >> /etc/default/docker