{'fraction_non_alphanumeric': 0.022587268993839837, 'fraction_numerical': 0.013347022587268994, 'mean_word_length': 5.170886075949367, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Mobility management based on mobile IP in mixed IPv4/IPv6 networks

The current network is evolving gradually from IPv4 to IPv6 network in order to acquire sufficient IP addresses and guarantee the QoS. However, the current mobile IP protocol is supported only when the MN moves within networks of the same IP version because the mobile IPv4 protocol is not compatible with mobile IPv6 protocol. Therefore, we propose an efficient method for the mobility support in mixed IPv4/IPv6 networks by introducing a mobile IP-application level gateway (MIP-ALG) into the network address translation-protocol translation (NAT-PT). This MIP-ALG compatibly translates MIPv4 messages to MIPv6 messages and vice versa. In addition, the proposed scheme minimizes the triangular routing problem of MIPv4 by inserting the binding function into the NAT-PT. Thus, the proposed mobility management scheme shows good delay performances compared with the conventional MIPv4 and MIPv6 operations.