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Editorial Team
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Asked: 2026-06-15T03:16:44+00:00

Background: I’m trying to setup a VPN server on android phone. For, this I

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Background:

I’m trying to setup a VPN server on android phone. For, this I am trying to use android sample application ToyVpn.

To setup the server, I have to add following rule in the nat table

#Pick a range of private addresses and perform NAT over eth0.
iptables -t nat -A POSTROUTING -s 10.0.0.0/8 -o eth0 -j MASQUERADE

But I got following error:

 iptables v1.4.14: can't initialize iptables table -nat: Table does not exist (do you need to insmod?)
 Perhaps iptables or your kernel needs to be upgraded.

I do not have any prior knowledge of working with the iptables. But, I searched about it, and replaced “-A” by “-I” i.e. instead of appending rule in the table now I’m inserting rule in the table, because my table was empty.

Problem:

The problem is that, Now in the nat table there is following message:

FIX ME! impliment getnetbyaddr() bionic/libc/bionic/stubs.c:444

above the rule that I inserted. The rule is appearing as:

MASQUERADE all -- 10.0.0.0/8 anywhere

Can anyone please guide me about what I did wrong and how can I fix it!

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1 Answer

  1. Editorial Team

    I do not think you did anything wrong – the message seems to indicate that a critical libc function is not implemented in bionic, the C library used by Android.

    I do not think there is really anything you can do, short of implementing the function in bionic and then possibly compiling most of an Android system from source.

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