Tony Chuang <yhchuang@xxxxxxxxxxx> writes: >> 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 <address>/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: <LOOPBACK,UP,LOWER_UP> 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: <BROADCAST,MULTICAST,UP,LOWER_UP> 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: <access denied> >> 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. My first guess would be some kind of multicast problem with power save mode. I would first try disabling the power save mode on the driver and see if that helps. -- https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
