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Linux pppd ipv6 failure: not cannot determine local address


Port foreword + openVPN + iptables?Managed Ethernet switch per-port MAC address translation?why ping6 fails if tcpdump shows ICMP6 request/reply traffic?Linux & IPv6: How to bind to an arbitrary IPv6 address?Linux server not receiving default IPv6 route over PPP linkIPv6 PPP Link fails forwarding Router Advertisements into local LANAdditional static IPv6 address on Ubuntu 14Apache (Linux) httpd listen on link-local IPv6 addressLinux pppd fails but NetworkManager worksCannot access public IPv6 address from outside






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0















I am trying to use pppd to establish ipv6 connection over a 4g modem. ipv4 has succeeded but ipv6 have not.



The pppd is 2.4.7.



pppd config:



+ipv6
ipv6cp-accept-local


Note: the pppd does not accept 'ipv6cp-accept-remote' option.



chat script:



AT+CGDCONT=1,"IPV6","myapn"


pppd logs:



sent [IPCP ConfReq id=0x1 <compress VJ 07 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPV6CP ConfReq id=0x1 <addr fe80::6c75:85ea:54cb:25e6>]
sent [IPCP ConfReq id=0x1 <compress VJ 07 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPV6CP ConfReq id=0x1 <addr fe80::6c75:85ea:54cb:25e6>]
rcvd [IPCP ConfReq id=0x1 <compress VJ 07 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPCP ConfRej id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
rcvd [IPV6CP ConfReq id=0x1 <addr fe80::6c75:85ea:54cb:25e6>]
sent [IPV6CP ConfNak id=0x1 <addr fe80::14a7:1bbd:e479:c9eb>]
rcvd [IPCP ConfRej id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPCP ConfReq id=0x2 <addrs 0.0.0.0 0.0.0.0> <compress VJ 07 01>]
rcvd [IPV6CP ConfNak id=0x1 <addr fe80::14a7:1bbd:e479:c9eb>]
sent [IPV6CP ConfReq id=0x2 <addr fe80::f08a:2c87:c7dc:aa6e>]
rcvd [IPCP ConfReq id=0x2 <addrs 0.0.0.0 0.0.0.0> <compress VJ 07 01>]
sent [IPCP ConfRej id=0x2 <addrs 0.0.0.0 0.0.0.0>]
rcvd [IPV6CP ConfReq id=0x2 <addr fe80::f08a:2c87:c7dc:aa6e>]
sent [IPV6CP ConfNak id=0x2 <addr fe80::0136:b136:6e32:344d>]
rcvd [IPCP ConfRej id=0x2 <addrs 0.0.0.0 0.0.0.0>]
sent [IPCP ConfReq id=0x3 <compress VJ 07 01>]
rcvd [IPV6CP ConfNak id=0x2 <addr fe80::0136:b136:6e32:344d>]
sent [IPV6CP ConfReq id=0x3 <addr fe80::4042:1547:076f:1770>]
rcvd [IPCP ConfReq id=0x3 <compress VJ 07 01>]
sent [IPCP ConfAck id=0x3 <compress VJ 07 01>]
rcvd [IPV6CP ConfReq id=0x3 <addr fe80::4042:1547:076f:1770>]
sent [IPV6CP ConfNak id=0x3 <addr fe80::7599:2d43:33e1:9216>]
rcvd [IPCP ConfAck id=0x3 <compress VJ 07 01>]
Could not determine local IP address
Connect time 0.1 minutes.
Sent 230 bytes, received 188 bytes.
sent [IPCP TermReq id=0x4 "Could not determine local IP address"]
rcvd [IPV6CP ConfNak id=0x3 <addr fe80::7599:2d43:33e1:9216>]
sent [IPV6CP ConfReq id=0x4 <addr fe80::e0aa:2a9c:4117:e47f>]
rcvd [IPCP TermReq id=0x4 "Could not determine local IP address"]
sent [IPCP TermAck id=0x4]
rcvd [IPV6CP ConfReq id=0x4 <addr fe80::e0aa:2a9c:4117:e47f>]
sent [IPV6CP ConfNak id=0x4 <addr fe80::64ca:b418:01f0:97dc>]
rcvd [IPCP TermAck id=0x4]
rcvd [IPV6CP ConfNak id=0x4 <addr fe80::64ca:b418:01f0:97dc>]
sent [IPV6CP ConfReq id=0x5 <addr fe80::2dc9:d268:a2da:a5ed>]
rcvd [IPV6CP ConfReq id=0x5 <addr fe80::2dc9:d268:a2da:a5ed>]
sent [IPV6CP ConfNak id=0x5 <addr fe80::54ab:e16f:42bb:17d3>]
rcvd [IPV6CP ConfNak id=0x5 <addr fe80::54ab:e16f:42bb:17d3>]
sent [IPV6CP ConfReq id=0x6]
rcvd [IPV6CP ConfReq id=0x6]
sent [IPV6CP ConfAck id=0x6]
rcvd [IPV6CP ConfAck id=0x6]
Could not determine remote LL address
cif6addr: ioctl(SIOCDIFADDR): No such address
sent [IPV6CP TermReq id=0x7 "Could not determine remote LL address"]
rcvd [IPV6CP TermReq id=0x7 "Could not determine remote LL address"]
sent [IPV6CP TermAck id=0x7]
rcvd [IPV6CP TermAck id=0x7]
sent [LCP TermReq id=0x2 "No network protocols running"]
rcvd [LCP TermReq id=0x2 "No network protocols running"]
sent [LCP TermAck id=0x2]
rcvd [LCP TermAck id=0x2]
Connection terminated.


Do you think it looks like my pppd problem or my provider problem? Thank in advance!










share|improve this question
























  • Your end is rejecting the IPv6 address received from the other end, and the other end is rejecting the IPv6 address your end proposes. Curiously, it's also failing to get an IPv4 address. How to fix this, I have no idea. Do you have to use PPP at all?

    – Michael Hampton
    May 21 at 16:44











  • Yes, I have to PPP. If I select IPv6 using "AT+CGDCONT=1,"IPV6","myapn", it will success.

    – Woody Wu
    May 22 at 1:50

















0















I am trying to use pppd to establish ipv6 connection over a 4g modem. ipv4 has succeeded but ipv6 have not.



The pppd is 2.4.7.



pppd config:



+ipv6
ipv6cp-accept-local


Note: the pppd does not accept 'ipv6cp-accept-remote' option.



chat script:



AT+CGDCONT=1,"IPV6","myapn"


pppd logs:



sent [IPCP ConfReq id=0x1 <compress VJ 07 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPV6CP ConfReq id=0x1 <addr fe80::6c75:85ea:54cb:25e6>]
sent [IPCP ConfReq id=0x1 <compress VJ 07 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPV6CP ConfReq id=0x1 <addr fe80::6c75:85ea:54cb:25e6>]
rcvd [IPCP ConfReq id=0x1 <compress VJ 07 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPCP ConfRej id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
rcvd [IPV6CP ConfReq id=0x1 <addr fe80::6c75:85ea:54cb:25e6>]
sent [IPV6CP ConfNak id=0x1 <addr fe80::14a7:1bbd:e479:c9eb>]
rcvd [IPCP ConfRej id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPCP ConfReq id=0x2 <addrs 0.0.0.0 0.0.0.0> <compress VJ 07 01>]
rcvd [IPV6CP ConfNak id=0x1 <addr fe80::14a7:1bbd:e479:c9eb>]
sent [IPV6CP ConfReq id=0x2 <addr fe80::f08a:2c87:c7dc:aa6e>]
rcvd [IPCP ConfReq id=0x2 <addrs 0.0.0.0 0.0.0.0> <compress VJ 07 01>]
sent [IPCP ConfRej id=0x2 <addrs 0.0.0.0 0.0.0.0>]
rcvd [IPV6CP ConfReq id=0x2 <addr fe80::f08a:2c87:c7dc:aa6e>]
sent [IPV6CP ConfNak id=0x2 <addr fe80::0136:b136:6e32:344d>]
rcvd [IPCP ConfRej id=0x2 <addrs 0.0.0.0 0.0.0.0>]
sent [IPCP ConfReq id=0x3 <compress VJ 07 01>]
rcvd [IPV6CP ConfNak id=0x2 <addr fe80::0136:b136:6e32:344d>]
sent [IPV6CP ConfReq id=0x3 <addr fe80::4042:1547:076f:1770>]
rcvd [IPCP ConfReq id=0x3 <compress VJ 07 01>]
sent [IPCP ConfAck id=0x3 <compress VJ 07 01>]
rcvd [IPV6CP ConfReq id=0x3 <addr fe80::4042:1547:076f:1770>]
sent [IPV6CP ConfNak id=0x3 <addr fe80::7599:2d43:33e1:9216>]
rcvd [IPCP ConfAck id=0x3 <compress VJ 07 01>]
Could not determine local IP address
Connect time 0.1 minutes.
Sent 230 bytes, received 188 bytes.
sent [IPCP TermReq id=0x4 "Could not determine local IP address"]
rcvd [IPV6CP ConfNak id=0x3 <addr fe80::7599:2d43:33e1:9216>]
sent [IPV6CP ConfReq id=0x4 <addr fe80::e0aa:2a9c:4117:e47f>]
rcvd [IPCP TermReq id=0x4 "Could not determine local IP address"]
sent [IPCP TermAck id=0x4]
rcvd [IPV6CP ConfReq id=0x4 <addr fe80::e0aa:2a9c:4117:e47f>]
sent [IPV6CP ConfNak id=0x4 <addr fe80::64ca:b418:01f0:97dc>]
rcvd [IPCP TermAck id=0x4]
rcvd [IPV6CP ConfNak id=0x4 <addr fe80::64ca:b418:01f0:97dc>]
sent [IPV6CP ConfReq id=0x5 <addr fe80::2dc9:d268:a2da:a5ed>]
rcvd [IPV6CP ConfReq id=0x5 <addr fe80::2dc9:d268:a2da:a5ed>]
sent [IPV6CP ConfNak id=0x5 <addr fe80::54ab:e16f:42bb:17d3>]
rcvd [IPV6CP ConfNak id=0x5 <addr fe80::54ab:e16f:42bb:17d3>]
sent [IPV6CP ConfReq id=0x6]
rcvd [IPV6CP ConfReq id=0x6]
sent [IPV6CP ConfAck id=0x6]
rcvd [IPV6CP ConfAck id=0x6]
Could not determine remote LL address
cif6addr: ioctl(SIOCDIFADDR): No such address
sent [IPV6CP TermReq id=0x7 "Could not determine remote LL address"]
rcvd [IPV6CP TermReq id=0x7 "Could not determine remote LL address"]
sent [IPV6CP TermAck id=0x7]
rcvd [IPV6CP TermAck id=0x7]
sent [LCP TermReq id=0x2 "No network protocols running"]
rcvd [LCP TermReq id=0x2 "No network protocols running"]
sent [LCP TermAck id=0x2]
rcvd [LCP TermAck id=0x2]
Connection terminated.


Do you think it looks like my pppd problem or my provider problem? Thank in advance!










share|improve this question
























  • Your end is rejecting the IPv6 address received from the other end, and the other end is rejecting the IPv6 address your end proposes. Curiously, it's also failing to get an IPv4 address. How to fix this, I have no idea. Do you have to use PPP at all?

    – Michael Hampton
    May 21 at 16:44











  • Yes, I have to PPP. If I select IPv6 using "AT+CGDCONT=1,"IPV6","myapn", it will success.

    – Woody Wu
    May 22 at 1:50













0












0








0








I am trying to use pppd to establish ipv6 connection over a 4g modem. ipv4 has succeeded but ipv6 have not.



The pppd is 2.4.7.



pppd config:



+ipv6
ipv6cp-accept-local


Note: the pppd does not accept 'ipv6cp-accept-remote' option.



chat script:



AT+CGDCONT=1,"IPV6","myapn"


pppd logs:



sent [IPCP ConfReq id=0x1 <compress VJ 07 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPV6CP ConfReq id=0x1 <addr fe80::6c75:85ea:54cb:25e6>]
sent [IPCP ConfReq id=0x1 <compress VJ 07 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPV6CP ConfReq id=0x1 <addr fe80::6c75:85ea:54cb:25e6>]
rcvd [IPCP ConfReq id=0x1 <compress VJ 07 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPCP ConfRej id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
rcvd [IPV6CP ConfReq id=0x1 <addr fe80::6c75:85ea:54cb:25e6>]
sent [IPV6CP ConfNak id=0x1 <addr fe80::14a7:1bbd:e479:c9eb>]
rcvd [IPCP ConfRej id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPCP ConfReq id=0x2 <addrs 0.0.0.0 0.0.0.0> <compress VJ 07 01>]
rcvd [IPV6CP ConfNak id=0x1 <addr fe80::14a7:1bbd:e479:c9eb>]
sent [IPV6CP ConfReq id=0x2 <addr fe80::f08a:2c87:c7dc:aa6e>]
rcvd [IPCP ConfReq id=0x2 <addrs 0.0.0.0 0.0.0.0> <compress VJ 07 01>]
sent [IPCP ConfRej id=0x2 <addrs 0.0.0.0 0.0.0.0>]
rcvd [IPV6CP ConfReq id=0x2 <addr fe80::f08a:2c87:c7dc:aa6e>]
sent [IPV6CP ConfNak id=0x2 <addr fe80::0136:b136:6e32:344d>]
rcvd [IPCP ConfRej id=0x2 <addrs 0.0.0.0 0.0.0.0>]
sent [IPCP ConfReq id=0x3 <compress VJ 07 01>]
rcvd [IPV6CP ConfNak id=0x2 <addr fe80::0136:b136:6e32:344d>]
sent [IPV6CP ConfReq id=0x3 <addr fe80::4042:1547:076f:1770>]
rcvd [IPCP ConfReq id=0x3 <compress VJ 07 01>]
sent [IPCP ConfAck id=0x3 <compress VJ 07 01>]
rcvd [IPV6CP ConfReq id=0x3 <addr fe80::4042:1547:076f:1770>]
sent [IPV6CP ConfNak id=0x3 <addr fe80::7599:2d43:33e1:9216>]
rcvd [IPCP ConfAck id=0x3 <compress VJ 07 01>]
Could not determine local IP address
Connect time 0.1 minutes.
Sent 230 bytes, received 188 bytes.
sent [IPCP TermReq id=0x4 "Could not determine local IP address"]
rcvd [IPV6CP ConfNak id=0x3 <addr fe80::7599:2d43:33e1:9216>]
sent [IPV6CP ConfReq id=0x4 <addr fe80::e0aa:2a9c:4117:e47f>]
rcvd [IPCP TermReq id=0x4 "Could not determine local IP address"]
sent [IPCP TermAck id=0x4]
rcvd [IPV6CP ConfReq id=0x4 <addr fe80::e0aa:2a9c:4117:e47f>]
sent [IPV6CP ConfNak id=0x4 <addr fe80::64ca:b418:01f0:97dc>]
rcvd [IPCP TermAck id=0x4]
rcvd [IPV6CP ConfNak id=0x4 <addr fe80::64ca:b418:01f0:97dc>]
sent [IPV6CP ConfReq id=0x5 <addr fe80::2dc9:d268:a2da:a5ed>]
rcvd [IPV6CP ConfReq id=0x5 <addr fe80::2dc9:d268:a2da:a5ed>]
sent [IPV6CP ConfNak id=0x5 <addr fe80::54ab:e16f:42bb:17d3>]
rcvd [IPV6CP ConfNak id=0x5 <addr fe80::54ab:e16f:42bb:17d3>]
sent [IPV6CP ConfReq id=0x6]
rcvd [IPV6CP ConfReq id=0x6]
sent [IPV6CP ConfAck id=0x6]
rcvd [IPV6CP ConfAck id=0x6]
Could not determine remote LL address
cif6addr: ioctl(SIOCDIFADDR): No such address
sent [IPV6CP TermReq id=0x7 "Could not determine remote LL address"]
rcvd [IPV6CP TermReq id=0x7 "Could not determine remote LL address"]
sent [IPV6CP TermAck id=0x7]
rcvd [IPV6CP TermAck id=0x7]
sent [LCP TermReq id=0x2 "No network protocols running"]
rcvd [LCP TermReq id=0x2 "No network protocols running"]
sent [LCP TermAck id=0x2]
rcvd [LCP TermAck id=0x2]
Connection terminated.


Do you think it looks like my pppd problem or my provider problem? Thank in advance!










share|improve this question
















I am trying to use pppd to establish ipv6 connection over a 4g modem. ipv4 has succeeded but ipv6 have not.



The pppd is 2.4.7.



pppd config:



+ipv6
ipv6cp-accept-local


Note: the pppd does not accept 'ipv6cp-accept-remote' option.



chat script:



AT+CGDCONT=1,"IPV6","myapn"


pppd logs:



sent [IPCP ConfReq id=0x1 <compress VJ 07 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPV6CP ConfReq id=0x1 <addr fe80::6c75:85ea:54cb:25e6>]
sent [IPCP ConfReq id=0x1 <compress VJ 07 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPV6CP ConfReq id=0x1 <addr fe80::6c75:85ea:54cb:25e6>]
rcvd [IPCP ConfReq id=0x1 <compress VJ 07 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPCP ConfRej id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
rcvd [IPV6CP ConfReq id=0x1 <addr fe80::6c75:85ea:54cb:25e6>]
sent [IPV6CP ConfNak id=0x1 <addr fe80::14a7:1bbd:e479:c9eb>]
rcvd [IPCP ConfRej id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPCP ConfReq id=0x2 <addrs 0.0.0.0 0.0.0.0> <compress VJ 07 01>]
rcvd [IPV6CP ConfNak id=0x1 <addr fe80::14a7:1bbd:e479:c9eb>]
sent [IPV6CP ConfReq id=0x2 <addr fe80::f08a:2c87:c7dc:aa6e>]
rcvd [IPCP ConfReq id=0x2 <addrs 0.0.0.0 0.0.0.0> <compress VJ 07 01>]
sent [IPCP ConfRej id=0x2 <addrs 0.0.0.0 0.0.0.0>]
rcvd [IPV6CP ConfReq id=0x2 <addr fe80::f08a:2c87:c7dc:aa6e>]
sent [IPV6CP ConfNak id=0x2 <addr fe80::0136:b136:6e32:344d>]
rcvd [IPCP ConfRej id=0x2 <addrs 0.0.0.0 0.0.0.0>]
sent [IPCP ConfReq id=0x3 <compress VJ 07 01>]
rcvd [IPV6CP ConfNak id=0x2 <addr fe80::0136:b136:6e32:344d>]
sent [IPV6CP ConfReq id=0x3 <addr fe80::4042:1547:076f:1770>]
rcvd [IPCP ConfReq id=0x3 <compress VJ 07 01>]
sent [IPCP ConfAck id=0x3 <compress VJ 07 01>]
rcvd [IPV6CP ConfReq id=0x3 <addr fe80::4042:1547:076f:1770>]
sent [IPV6CP ConfNak id=0x3 <addr fe80::7599:2d43:33e1:9216>]
rcvd [IPCP ConfAck id=0x3 <compress VJ 07 01>]
Could not determine local IP address
Connect time 0.1 minutes.
Sent 230 bytes, received 188 bytes.
sent [IPCP TermReq id=0x4 "Could not determine local IP address"]
rcvd [IPV6CP ConfNak id=0x3 <addr fe80::7599:2d43:33e1:9216>]
sent [IPV6CP ConfReq id=0x4 <addr fe80::e0aa:2a9c:4117:e47f>]
rcvd [IPCP TermReq id=0x4 "Could not determine local IP address"]
sent [IPCP TermAck id=0x4]
rcvd [IPV6CP ConfReq id=0x4 <addr fe80::e0aa:2a9c:4117:e47f>]
sent [IPV6CP ConfNak id=0x4 <addr fe80::64ca:b418:01f0:97dc>]
rcvd [IPCP TermAck id=0x4]
rcvd [IPV6CP ConfNak id=0x4 <addr fe80::64ca:b418:01f0:97dc>]
sent [IPV6CP ConfReq id=0x5 <addr fe80::2dc9:d268:a2da:a5ed>]
rcvd [IPV6CP ConfReq id=0x5 <addr fe80::2dc9:d268:a2da:a5ed>]
sent [IPV6CP ConfNak id=0x5 <addr fe80::54ab:e16f:42bb:17d3>]
rcvd [IPV6CP ConfNak id=0x5 <addr fe80::54ab:e16f:42bb:17d3>]
sent [IPV6CP ConfReq id=0x6]
rcvd [IPV6CP ConfReq id=0x6]
sent [IPV6CP ConfAck id=0x6]
rcvd [IPV6CP ConfAck id=0x6]
Could not determine remote LL address
cif6addr: ioctl(SIOCDIFADDR): No such address
sent [IPV6CP TermReq id=0x7 "Could not determine remote LL address"]
rcvd [IPV6CP TermReq id=0x7 "Could not determine remote LL address"]
sent [IPV6CP TermAck id=0x7]
rcvd [IPV6CP TermAck id=0x7]
sent [LCP TermReq id=0x2 "No network protocols running"]
rcvd [LCP TermReq id=0x2 "No network protocols running"]
sent [LCP TermAck id=0x2]
rcvd [LCP TermAck id=0x2]
Connection terminated.


Do you think it looks like my pppd problem or my provider problem? Thank in advance!







linux linux-networking ipv6 point-to-point-protocol






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited May 21 at 16:45









Michael Hampton

179k27326660




179k27326660










asked May 21 at 13:57









Woody WuWoody Wu

264




264












  • Your end is rejecting the IPv6 address received from the other end, and the other end is rejecting the IPv6 address your end proposes. Curiously, it's also failing to get an IPv4 address. How to fix this, I have no idea. Do you have to use PPP at all?

    – Michael Hampton
    May 21 at 16:44











  • Yes, I have to PPP. If I select IPv6 using "AT+CGDCONT=1,"IPV6","myapn", it will success.

    – Woody Wu
    May 22 at 1:50

















  • Your end is rejecting the IPv6 address received from the other end, and the other end is rejecting the IPv6 address your end proposes. Curiously, it's also failing to get an IPv4 address. How to fix this, I have no idea. Do you have to use PPP at all?

    – Michael Hampton
    May 21 at 16:44











  • Yes, I have to PPP. If I select IPv6 using "AT+CGDCONT=1,"IPV6","myapn", it will success.

    – Woody Wu
    May 22 at 1:50
















Your end is rejecting the IPv6 address received from the other end, and the other end is rejecting the IPv6 address your end proposes. Curiously, it's also failing to get an IPv4 address. How to fix this, I have no idea. Do you have to use PPP at all?

– Michael Hampton
May 21 at 16:44





Your end is rejecting the IPv6 address received from the other end, and the other end is rejecting the IPv6 address your end proposes. Curiously, it's also failing to get an IPv4 address. How to fix this, I have no idea. Do you have to use PPP at all?

– Michael Hampton
May 21 at 16:44













Yes, I have to PPP. If I select IPv6 using "AT+CGDCONT=1,"IPV6","myapn", it will success.

– Woody Wu
May 22 at 1:50





Yes, I have to PPP. If I select IPv6 using "AT+CGDCONT=1,"IPV6","myapn", it will success.

– Woody Wu
May 22 at 1:50










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