| How to config the NAT46 in datapath to use the XLAT(CLAT) |
| ======================================== |
| Here we take 1802s (i.e. NezhaS) as example, 1826 (i.e. Nezha3) is similar. |
| The host PC system tested in this paper is Ubuntu 5.4.0-6Ubuntu 1~16.04.12. |
| |
| 1, PIPE mode |
| 1) make kernel_menuconfig and select "DATA_PATH_NAT46" and save your new configuration. |
| And then rebuild：make -j8 V=99 |
| |
| 2) Disable IPv6 in Ubuntu |
| "echo "net.ipv6.conf.all.disable_ipv6=1" >> /etc/sysctl.conf" |
| "sysctl -p" |
| |
| 3) Redial using IPv6 |
| "serial_client" |
| "AT+ZGDCONT=1,IPV6,GPRS" |
| "AT+ZGACT=1,1" |
| After this operation, you will not be able to access the IPv4 service and ping IPv4 will fail on the host side. |
| |
| 4) NAT46 Configuration |
| First query the IPv6 global address and local IPv4 address of ccinet, use "cat /sys/kernel/mpipe/devices/all" |
| you will get some information like this: |
| device state type refcnt IP IPv6 |
| lo Down pipe 2 0.0.0.0 ::/0 |
| embms0 Down pipe 2 0.0.0.0 ::/0 |
| ccinet0 Up4/6 pipe 2 10.180.250.252 240e:9a:83e:4a98::/64 |
| ccinet1 Down pipe 2 0.0.0.0 ::/0 |
| ccinet2 Down pipe 2 0.0.0.0 ::/0 |
| ccinet3 Down pipe 2 0.0.0.0 ::/0 |
| ccinet4 Down pipe 2 0.0.0.0 ::/0 |
| ccinet5 Down pipe 2 0.0.0.0 ::/0 |
| ccinet6 Down pipe 2 0.0.0.0 ::/0 |
| ccinet7 Down pipe 2 0.0.0.0 ::/0 |
| ip6tnl0 Down pipe 2 0.0.0.0 ::/0 |
| tunl0 Down pipe 2 0.0.0.0 ::/0 |
| usbnet0 Up4/6 lan 3 192.168.1.1 ::/0 |
| |
| "10.180.250.252" will serve as the IPv4 address of host and the local IPv4 address in NAT46, |
| and "240e:9a:83e:4a98::" will serve as the local IPv6 address in NAT46. |
| The detailed configuration is as follows: |
| "echo add nat46 | tee /sys/kernel/debug/tel/psd/data-pathv1/nat46_control" |
| "echo config nat46 local.v4 10.180.250.252/32 | tee /sys/kernel/debug/tel/psd/data-pathv1/nat46_control" |
| "echo config nat46 local.v6 240e:9a:83e:4a98::1/64 | tee /sys/kernel/debug/tel/psd/data-pathv1/nat46_control" |
| "echo config nat46 local.style RFC6052 | tee /sys/kernel/debug/tel/psd/data-pathv1/nat46_control" |
| 32 indicates the mask length of the local IPv4 address, 64 indicates the prefix length of an IPv6 address. |
| |
| if the remote IPv6 server(PLAT) is "240e:eb:8001:e05::/96", |
| "echo config nat46 remote.v6 240e:eb:8001:e05::/96 | tee /sys/kernel/debug/tel/psd/data-pathv1/nat46_control" |
| "echo config nat46 remote.style RFC6052 | tee /sys/kernel/debug/tel/psd/data-pathv1/nat46_control" |
| |
| the command "echo 1 > /sys/kernel/debug/tel/psd/data-pathv1/bypass_nat46" can be used to terminate the NAT46 translate. |
| |
| 5) Host Configuration |
| "ifconfig enp0s26u1u1 10.180.250.252 netmask 255.255.255.0 up" |
| "route add default gw 10.180.250.3" |
| |
| 6) Test |
| When use "echo 1 > /sys/kernel/debug/tel/psd/data-pathv1/bypass_nat46" to terminate the NAT46 translate, |
| ping the IPv4 server on the host side will fails. |
| When use "echo 0 > /sys/kernel/debug/tel/psd/data-pathv1/bypass_nat46" to enable the NAT46 translate, |
| ping the IPv4 server on the host side will success. |
| |
| ---------------------------------------- |
| |
| 2, MIFI mode |
| 1) make kernel_menuconfig and select "DATA_PATH_NAT46" and save your new configuration. |
| And then rebuild：make -j8 V=99 |
| |
| 2) Disable IPv6 in Ubuntu |
| "echo "net.ipv6.conf.all.disable_ipv6=1" >> /etc/sysctl.conf" |
| "sysctl -p" |
| |
| 3) Redial using IPv6 |
| "serial_client" |
| "AT+ZGDCONT=1,IPV6,GPRS" |
| "AT+ZGACT=1,1" |
| After this operation, you will not be able to access the IPv4 service and failed to ping IPv4 on the host or 1802s, |
| but you can successfully ping the IPv6 server on 1802s. |
| |
| 4) NAT46 Configuration |
| Use "ifconfig" to query the IPv6 global address and local IPv4 address of ccinet, |
| you will get some information like this: |
| br-lan Link encap:Ethernet HWaddr 02:C0:84:B0:2A:99 |
| inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0 |
| inet6 addr: 240e:9a:8c9:f13d::1/64 Scope:Global |
| inet6 addr: fe80::c0:84ff:feb0:2a99/64 Scope:Link |
| UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 |
| RX packets:29 errors:0 dropped:0 overruns:0 frame:0 |
| TX packets:55 errors:0 dropped:0 overruns:0 carrier:0 |
| collisions:0 txqueuelen:0 |
| RX bytes:3296 (3.2 KiB) TX bytes:6411 (6.2 KiB) |
| |
| ccinet0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 |
| inet addr:10.164.56.133 Mask:255.255.255.255 |
| inet6 addr: fe80::1/64 Scope:Link |
| inet6 addr: 240e:9a:8c9:f13d::1/64 Scope:Global |
| UP RUNNING NOARP MTU:1500 Metric:1 |
| RX packets:28 errors:0 dropped:0 overruns:0 frame:0 |
| TX packets:35 errors:0 dropped:0 overruns:0 carrier:0 |
| collisions:0 txqueuelen:1000 |
| RX bytes:2848 (2.7 KiB) TX bytes:3136 (3.0 KiB) |
| |
| lo Link encap:Local Loopback |
| inet addr:127.0.0.1 Mask:255.0.0.0 |
| inet6 addr: ::1/128 Scope:Host |
| UP LOOPBACK RUNNING MTU:65536 Metric:1 |
| RX packets:142 errors:0 dropped:0 overruns:0 frame:0 |
| TX packets:142 errors:0 dropped:0 overruns:0 carrier:0 |
| collisions:0 txqueuelen:0 |
| RX bytes:7480 (7.3 KiB) TX bytes:7480 (7.3 KiB) |
| |
| usbnet0 Link encap:Ethernet HWaddr 02:C0:84:B0:2A:99 |
| UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 |
| RX packets:34 errors:0 dropped:0 overruns:0 frame:0 |
| TX packets:66 errors:0 dropped:0 overruns:0 carrier:0 |
| collisions:0 txqueuelen:1000 |
| RX bytes:3436 (3.3 KiB) TX bytes:12027 (11.7 KiB) |
| |
| "10.164.56.133" will serve as the local IPv4 address in NAT46, and "240e:9a:8c9:f13d::1" will serve as the local IPv6 address in NAT46. |
| The detailed configuration is as follows: |
| "echo add nat46 | tee /sys/kernel/debug/tel/psd/data-pathv1/nat46_control" |
| "echo config nat46 local.v4 10.164.56.133/32 | tee /sys/kernel/debug/tel/psd/data-pathv1/nat46_control" |
| "echo config nat46 local.v6 240e:9a:8c9:f13d::1/64 | tee /sys/kernel/debug/tel/psd/data-pathv1/nat46_control" |
| "echo config nat46 local.style RFC6052 | tee /sys/kernel/debug/tel/psd/data-pathv1/nat46_control" |
| 32 indicates the mask length of the local IPv4 address, 64 indicates the prefix length of an IPv6 address. |
| |
| if the remote IPv6 server is "240e:eb:8001:e05::/96", |
| "echo config nat46 remote.v6 240e:eb:8001:e05::/96 | tee /sys/kernel/debug/tel/psd/data-pathv1/nat46_control" |
| "echo config nat46 remote.style RFC6052 | tee /sys/kernel/debug/tel/psd/data-pathv1/nat46_control" |
| |
| the command "echo 1 > /sys/kernel/debug/tel/psd/data-pathv1/bypass_nat46" can be used to terminate the NAT46 translate. |
| |
| 5) Host Configuration |
| "dhclient enp0s26u1u1" |
| "route add default gw 192.168.1.1" |
| |
| 6) Test |
| When we use "echo 1 > /sys/kernel/debug/tel/psd/data-pathv1/bypass_nat46" to terminate the NAT46 translate, |
| ping the IPv4 server on the host side will fails. |
| When we use "echo 0 > /sys/kernel/debug/tel/psd/data-pathv1/bypass_nat46" to enable the NAT46 translate, |
| ping the IPv4 server on the host side will success. |