Updated information on bridges (for them to persist between restarts)

README.md

@@ -421,23 +421,27 @@ riverctl float-filter-add title 'Firefox — Sharing Indicator'
 (assuming that your internet-connected interface is eth0,
 and that you want to use 10.157.1.0/24 subnet for the container)
 
+Add the following to ``:
+```
+auto br0
+iface br0 inet static
+	bridge-ports dummy0
+	bridge-stp 0
+	address 10.157.1.1
+	netmask 255.255.255.0
+```
+
+and do
+
 ```
 doas apk add bridge
 doas modprobe dummy
-doas brctl addbr br0
-doas brctl setfd br0 0
-doas brctl addif br0 dummy0
-doas ifconfig br0 10.157.1.1 netmask 255.255.255.0 up
+echo dummy | doas tee -a /etc/modules
 echo 1 | doas tee -a /proc/sys/net/ipv4/ip_forward
 doas apk add iptables
 doas rc-update add iptables
 doas iptables --table nat --append POSTROUTING --out-interface eth0 -j MASQUERADE
 doas iptables --append FORWARD --in-interface br0 -j ACCEPT
-```
-
-to persist:
-```
-echo dummy | doas tee -a /etc/modules
 doas /etc/init.d/iptables save
 ```