[Python] Sending packets with Scapy within Python environment

I am playing around with Scapy and I want to use it within a Python script but sending packets seem to be a problem. Here is my code.

Scapy Shell:

send(IP(src="10.0.99.100",dst="10.1.99.100")/ICMP()/"Hello World")


This works fine and sends the packet.

Python script:

#! /usr/bin/env python

from scapy.all import sr1,IP,ICMP

p=sr1(IP(src="10.0.99.100",dst="10.1.99.100")/ICMP()/"Hello World")


This runs fine but when it tries to send the packet I get:

WARNING: No route found for IPv6 destination :: (no default route?)
Begin emission:
.Finished to send 1 packets.
....^C
Received 5 packets, got 0 answers, remaining 1 packets

Continue reading...