| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 1 | How to use the upstream XLAT464 function |
| 2 | ======================================== |
| 3 | For xlat464, we offer two solutions: one is the upstream xlat464 described in this document, |
| 4 | and the other is based on datapath provided by ASR (see howto: data_path_nat46.txt). |
| 5 | In contrast, the former converts nat46 and nat64 in the kernel, which will lose some throughput and cpu, |
| 6 | while the latter can achieve zero copy, which can improve throughput. |
| 7 | |
| 8 | Here we take 1803 (i.e. Falcon) as example. |
| 9 | The host PC system tested in this paper is Ubuntu 16.04.7 LTS. |
| 10 | |
| 11 | |
| 12 | 1) make menuconfig and select "PACKAGE_464xlat" and save your new configuration. |
| 13 | And then rebuild：make -j8 V=99 |
| 14 | |
| 15 | 2) Redial using IPv6 |
| 16 | "serial_client" |
| 17 | "AT+ZGDCONT=1,IPV6,GPRS" |
| 18 | "AT+ZGACT=1,1" |
| 19 | After this operation, you will not be able to access the IPv4 service and failed to ping IPv4 on the host or 1803, |
| 20 | but you can successfully ping the IPv6 server on 1803. |
| 21 | |
| 22 | 3) Configure CLAT interface |
| 23 | # Configure network |
| 24 | uci set network.clat="interface" |
| 25 | uci set network.clat.proto="464xlat" |
| 26 | uci set network.clat.ip6prefix="64:ff9b::/96" |
| 27 | uci commit network |
| 28 | /etc/init.d/network reload |
| 29 | |
| 30 | 64:ff9b::/96 is the v6 prefix of PLAT, which may not be accessible in china but is available overseas. |
| 31 | |
| 32 | 4) Firewall |
| 33 | Consider CLAT network as public. Assign CLAT interface to WAN zone to minimize firewall setup. |
| 34 | # Configure firewall |
| 35 | uci rename firewall.@zone[1]="wan" |
| 36 | uci del_list firewall.wan.network="clat" |
| 37 | uci add_list firewall.wan.network="clat" |
| 38 | uci set firewall.wan.forward="ACCEPT" |
| 39 | uci commit firewall |
| 40 | /etc/init.d/firewall reload |
| 41 | |
| 42 | 5) DHCP |
| 43 | If you need to resolve IPv6 domain names on Ubuntu, you need to configure IPv6 dns information in dhcp. |
| 44 | # Configure dhcp |
| 45 | list dns '2409:8030:2000::1' |
| 46 | list dns '2409:8030:2000::2' |
| 47 | uci add_list dhcp.lan.dns="2409:8030:2000::1" |
| 48 | uci add_list dhcp.lan.dns="2409:8030:2000::2" |
| 49 | uci commit dhcp |
| 50 | /etc/init.d/odhcpd restart |
| 51 | |
| 52 | 2409:8030:2000::1 is the IPv6 dns you obtained by dialing, you can also set others, such as the gateway address of br-lan or Google dns. |
| 53 | |
| 54 | 6) Host Configuration |
| 55 | "dhclient enp0s26u1u1" |
| 56 | "route add default gw 192.168.1.1" |
| 57 | |
| 58 | enp0s26u1u1 is the enumerated rndis NIC on Ubuntu. |
| 59 | |
| 60 | 7) Testing |
| 61 | Establish the XLAT connection. Use ping to verify your client can be accessed using IPv4. |
| 62 | ping www.baidu.com |