I'm using 3.5.6.0 on OpenWrt 18.06.4. Yes, I know it's old and stricken but it was working for me for a while and 19.07.x is right around the corner. Hopefully. :-) The router has since rebooted and the module didn't get automatically reloaded, so I will have to investigate why/how to do that, but that's not relevant here.
In any case after the reboot I inserted the module manually: # modprobe jool pool6=64:ff9b::/96 # lsmod | grep jool crypto_hash 8288 2 jool,md5 jool 101424 0 nf_defrag_ipv4 800 4 jool,xt_socket,xt_TPROXY,nf_conntrack_ipv4 nf_defrag_ipv6 4304 4 jool,xt_socket,xt_TPROXY,nf_conntrack_ipv6 So it seems to be loaded OK. It just doesn't seem to be NAT64ing packets: # ping 64:ff9b::1.1.1.1 PING 64:ff9b::1.1.1.1(64:ff9b::101:101) 56 data bytes [nothing] Those packets are making it to the router: # tcpdump -i br-lan -s 0 -n net 64:ff9b::/96 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on br-lan, link-type EN10MB (Ethernet), capture size 262144 bytes 11:18:40.500058 IP6 2001:123:ab:123:16da:e9ff:fe48:f99e > 64:ff9b::101:101: ICMP6, echo request, seq 53, length 64 11:18:41.524101 IP6 2001:123:ab:123:16da:e9ff:fe48:f99e > 64:ff9b::101:101: ICMP6, echo request, seq 54, length 64 11:18:42.548170 IP6 2001:123:ab:123:16da:e9ff:fe48:f99e > 64:ff9b::101:101: ICMP6, echo request, seq 55, length 64 11:18:43.572236 IP6 2001:123:ab:123:16da:e9ff:fe48:f99e > 64:ff9b::101:101: ICMP6, echo request, seq 56, length 64 but the corresponding ipv4 packets are not being sent on the WAN interface: # tcpdump -i eth0.2 -n -s 0 host 1.1.1.1 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth0.2, link-type EN10MB (Ethernet), capture size 262144 bytes ^C 0 packets captured 9 packets received by filter 0 packets dropped by kernel Is there something I am missing/forgetting other than to just "modprobe jool pool6=64:ff9b::/96"? Cheers, b.
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