<p>First of all check that your system support IpV6.
Run this:</p>

<pre><code>test -f /proc/net/if_inet6 &amp;&amp; echo "IPv6 supported" || echo "IPv6 not supported"
</code></pre>

<p>Then make sure to bind to <code>::ffff:0.0.0.0</code></p>

CC BY-SA 4.0
2018-10-13T11:58:28.307Z
2018-10-13T11:58:28.307Z
Rocco Musolino
<p>I'm trying to run a regtest bitcoind node but I'm always receiving the following error </p>

<blockquote>
  <p>connect() to [2a05:d01c:a35:2902:6e18:7290:ff27:e9aa]:18444 failed:
  Cannot assign requested address (99)</p>
</blockquote>

<p>My config:</p>

<pre><code>bitcoind -printtoconsole -regtest=1 -rpcallowip=::/0 -rpcauth="...."
</code></pre>

<p>I'm running the node with through docker with the following image <a href="https://hub.docker.com/r/ruimarinho/bitcoin-core/" rel="nofollow noreferrer">https://hub.docker.com/r/ruimarinho/bitcoin-core/</a></p>

<p>Thanks by advance for your answer.</p>

<bitcoind><json-rpc><regtest>
Bitcoind Cannot assign requested address
oktapodia
# Bitcoind Cannot assign requested address

(Asked by: username_0 on 2018-06-01)

I'm trying to run a regtest bitcoind node but I'm always receiving the following error

> connect() to [2a05:d01c:a35:2902:6e18:7290:ff27:e9aa]:18444 failed:
> Cannot assign requested address (99)

My config:

```
bitcoind -printtoconsole -regtest=1 -rpcallowip=::/0 -rpcauth="...."

```

I'm running the node with through docker with the following image <https://hub.docker.com/r/ruimarinho/bitcoin-core/>

Thanks by advance for your answer.

**Tags:** bitcoind, json-rpc, regtest


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## 1 answers

### Answer by username_1 on 2018-10-13. Score: 1

First of all check that your system support IpV6.
Run this:

```
test -f /proc/net/if_inet6 && echo "IPv6 supported" || echo "IPv6 not supported"

```

Then make sure to bind to `::ffff:0.0.0.0`


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