Re: little bit off topic CLAT-Daemon for 464xlat for "Linux" (not android)

[Thomas Schäfer <tschaefer t-online de>]

Tanks a lot again!

Printing and framing emails is not enough. Today I found the time to read your 
answer carefully. Yes, it works for me too! Special thanks for the hint with 
the nd-proxy. 

echo 1 > /proc/sys/net/ipv6/conf/eth0/proxy_ndp

ip -6 neigh add proxy 2001:6f8:120c::c1a7 dev eth0


My configuration was unfortunately no real UMTS/LTE-connection. Instead of 
this I used ethernet without IPv4.

tun-device clat
ipv4-addr 192.168.255.1
prefix 2001:67c:2b0:db32:0:1::/96
map 192.0.0.4 2001:6f8:120c:0::c1a7



1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP 
qlen 1000
    link/ether 3c:d9:2b:1a:c9:9a brd ff:ff:ff:ff:ff:ff
    inet6 fd00::3ed9:2bff:fe1a:c99a/64 scope global dynamic 
       valid_lft 6844sec preferred_lft 3244sec
    inet6 2001:6f8:120c:0:3ed9:2bff:fe1a:c99a/64 scope global dynamic 
       valid_lft 6844sec preferred_lft 3244sec
    inet6 fe80::3ed9:2bff:fe1a:c99a/64 scope link 
       valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
    link/ether d0:df:9a:93:67:90 brd ff:ff:ff:ff:ff:ff
5: clat: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast 
state UP qlen 500
    link/none 
    inet 192.0.0.4/32 scope global clat
       valid_lft forever preferred_lft forever

Back to the original intention. Is it useful to integrate this in the 
NetworkManager on "normal" Linux-Desktops?

After the native IPv6-only-connection is established the NetworkManager or a 
other tool has to check if DNS is DNS64/NAT64, if so it has to guess/read the 
/96-NAT64-prefix and to configure the clat/tayga-Interface.


Regards,

Thomas