Am 2019-12-05 04:36, schrieb Tony Chuang:
>> Subject: RTL8822CE IPv6 autoconfiguration not working
>>
>> Hello,
>>
>> I just bought a new laptop with an Realtek RTL8822CE wireless card
>> buildin. I'm using NetworkManager with its internal DHCP client. I
>> have
>> working IPv6 autoconfiguration support in my home network with 7
>> devices
>> with different operating systems. When I plug a USB network card into
>> the laptop IPv6 is configured sucessfully. But with the wireless card
>> IPv6 autoconfiguration doesn't work. When I manually add an IPv6 with
>> "sudo ip -6 addr add
/64 dev wlp1s0" I can ping IPv6 targets.
>> So there seems to be an bug either in the driver or maybe in
>> NetworkManager which prevents autoconfiguration from working, can
>> sombody look into this? I'm glad to help and provide further
>> informations or test things out.
>>
>> Kind Regards
>> Joshua
>>
>>
>> ip addr
>> 1: lo: mtu 65536 qdisc noqueue state
>> UNKNOWN
>> group default qlen 1000
>> 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: wlp1s0: mtu 1500 qdisc mq
>> state UP
>> group default qlen 1000
>> link/ether 40:5b:d8:1a:7a:a9 brd ff:ff:ff:ff:ff:ff
>> inet 192.168.178.25/24 brd 192.168.178.255 scope global dynamic
>> noprefixroute wlp1s0
>> valid_lft 863798sec preferred_lft 863798sec
>> inet6 fe80::1b8b:8c3a:b569:a882/64 scope link noprefixroute
>> valid_lft forever preferred_lft forever
>>
>> lspci -v
>> 01:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device
>> c822
>> Subsystem: Electronics & Telecommunications RSH Device 1e25
>> Flags: bus master, fast devsel, latency 0, IRQ 71
>> I/O ports at 2000 [size=256]
>> Memory at c0700000 (64-bit, non-prefetchable) [size=64K]
>> Capabilities:
>> Kernel driver in use: rtw_pci
>> Kernel modules: rtwpci
>>
>
> I am not sure if this is driver-related problem, but I think you can
> try to
> tcpdump and see where the autoconfiguration failed.
> And I am not an expert of IPv6, but if there is any issue with the
> driver I
> can help you.
>
> Yan-Hsuan
Hello,
thanks for the answer, tcpdump attached.
Regards
Joshua