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Managing OpenWRT » History » Version 5

Nico Schottelius, 07/03/2020 12:13 PM

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h1. Managing OpenWRT
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h2. Installing and configuring Jool
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* You can use one of the known NAT64 prefixes from our networks (LINK!)
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** In the example below this is 2a0a:e5c0:2:10::/96
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* You need to have a /96 (or better: /64) routed to the openwrt
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** In the example below this is 2a0a:e5c0:17:1::/96
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<pre>
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opkg install kmod-jool
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opkg install jool-tools
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# Load the kernel module
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modprobe jool_siit
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# The range which will be the target for the 2nd NAT (if needed to reach a v4 ip)
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jool_siit -6 2a0a:e5c0:2:10::/96
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# Pick a v6 range to translate TO and a v4 range to translate from
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jool_siit -e -a 2a0a:e5c0:17:1::/96 192.168.61.0/24
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# Accept Router Advertisements to keep the default address
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sysctl -w net.ipv6.conf.all.accept_ra=2
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sysctl -w net.ipv6.conf.default.accept_ra=2
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sysctl -w net.ipv6.conf.eth0.accept_ra=2
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</pre>
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h2. Enabling routing with router advertisements
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* By default ipv6 forwarding is on (good!)
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* By default accept_ra is 0
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** This does not set the route properly into the kernel -> routing is broken
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* Need to modify accept_ra to 2