getprotobyname error iptables
android
Solution
Android uses Bionic libc, which is a really minimal libc that is missing lots of things. That error message is saying that `getprotobyname()` is not implemented in Bionic libc. `iptables` seems to run the command anyway when this error is triggered, but my guess is that its ignoring the `-p tcp` part and just setting the rule for all protocols.
Luckily that function is not essential to working with iptables. `getprotobyname()` just converts protocol names like tcp to a number (tcp == 6). You can find those numbers here: http://www.iana.org/assignments/protocol-numbers/protocol-numbers.xml
Use the protocol number instead `-p 6` to eliminate the error message:
` iptables -A INPUT -p 6 -i eth0 --dport 8000 -m state --state NEW -j ACCEPT `
Problem
I have android with iptables support on a rooted device. I seem to get this error, anyone have any idea why? ``` iptables -A INPUT -p tcp -i eth0 --dport 8000 -m state --state NEW -j ACCEPT ``` ``` FIX ME! implement getprotobyname() bionic/libc/bionic/stubs.c:378 ```