@Juerg: My config for my network setup, which is an AP via wlan0, not bridged and station via USB Wifi dongle:
------------------------------------------------- #!/bin/bash # Error management set -o pipefail set -o nounset set -x apt install -y hostapd dnsmasq systemctl unmask hostapd systemctl enable hostapd systemctl stop hostapd systemctl stop dnsmasq echo -e "interface wlan0\n\tstatic ip_address=192.168.10.1/24\n\tnohook wpa_supplicant\n" >> /etc/dhcpcd.conf systemctl restart dhcpcd cp /home/pi/hostapd.conf /etc/hostapd/ sed -i 's/^#DAEMON_CONF=.*$/DAEMON_CONF="\/etc\/hostapd\/hostapd.conf"/' /etc/default/hostapd mv /etc/dnsmasq.conf /etc/dnsmasq.conf.orig cp /home/pi/dnsmasq.conf /etc/ systemctl unmask hostapd systemctl enable hostapd systemctl start hostapd service dnsmasq start ------------------------------------------------- Unlike the top post, I'm not using IPV6 so that is not a factor. However, the kernel log --- CUT HERE --- ... NETDEV WATCHDOG occurs for me. As I state above in my original post: ------------------------------------------------- When I do connect, I am sending a lot of data. Hard to pin what actions are triggering the NETDEV WATCHDOG backtrace, but it leaves wlan1 in a state where it cannot come up again: SIOCSIFFLAGS: No such device ip address shows wlan1: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default qlen 1000 vcgencmd shows: Aug 6 2020 16:24:09 version af3...d5b337 (clean) (release) (start) ------------------------------------------- Seems to me a driver issue when there is a flood of traffic. The older version of firmware I posted above solves the problem. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1861936 Title: Raspberry Pi 3 network dies shortly after a burst of IPv6 tunnel network load ((lan78xx): transmit queue 0 timed out) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1861936/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
