WAN6 - DHCPv6 client error: Network device is not present

Installing and Using OpenWrt Network and Wireless Configuration
1

Having a problem with ipv6 after setting up my wireless network. Anyone see something wrong?

Screen Shot 2021-02-12 at 12.07.15
Screen Shot 2021-02-12 at 12.07.15906×222 28.7 KB

/etc/config/firewall

config defaults
	option syn_flood '1'
	option input 'ACCEPT'
	option output 'ACCEPT'
	option forward 'REJECT'

config zone 'lan'
	option name 'lan'
	list network 'lan'
	option input 'ACCEPT'
	option output 'ACCEPT'
	option forward 'ACCEPT'
	list device 'tun+'

config zone 'wan'
	option name 'wan'
	list network 'wan'
	list network 'wan6'
	option input 'REJECT'
	option output 'ACCEPT'
	option forward 'REJECT'
	option masq '1'
	option mtu_fix '1'

config forwarding
	option src 'lan'
	option dest 'wan'

config rule
	option name 'Allow-DHCP-Renew'
	option src 'wan'
	option proto 'udp'
	option dest_port '68'
	option target 'ACCEPT'
	option family 'ipv4'

config rule
	option name 'Allow-Ping'
	option src 'wan'
	option proto 'icmp'
	option icmp_type 'echo-request'
	option family 'ipv4'
	option target 'ACCEPT'

config rule
	option name 'Allow-IGMP'
	option src 'wan'
	option proto 'igmp'
	option family 'ipv4'
	option target 'ACCEPT'

config rule
	option name 'Allow-DHCPv6'
	option src 'wan'
	option proto 'udp'
	option src_ip 'fc00::/6'
	option dest_ip 'fc00::/6'
	option dest_port '546'
	option family 'ipv6'
	option target 'ACCEPT'

config rule
	option name 'Allow-MLD'
	option src 'wan'
	option proto 'icmp'
	option src_ip 'fe80::/10'
	list icmp_type '130/0'
	list icmp_type '131/0'
	list icmp_type '132/0'
	list icmp_type '143/0'
	option family 'ipv6'
	option target 'ACCEPT'

config rule
	option name 'Allow-ICMPv6-Input'
	option src 'wan'
	option proto 'icmp'
	list icmp_type 'echo-request'
	list icmp_type 'echo-reply'
	list icmp_type 'destination-unreachable'
	list icmp_type 'packet-too-big'
	list icmp_type 'time-exceeded'
	list icmp_type 'bad-header'
	list icmp_type 'unknown-header-type'
	list icmp_type 'router-solicitation'
	list icmp_type 'neighbour-solicitation'
	list icmp_type 'router-advertisement'
	list icmp_type 'neighbour-advertisement'
	option limit '1000/sec'
	option family 'ipv6'
	option target 'ACCEPT'

config rule
	option name 'Allow-ICMPv6-Forward'
	option src 'wan'
	option dest '*'
	option proto 'icmp'
	list icmp_type 'echo-request'
	list icmp_type 'echo-reply'
	list icmp_type 'destination-unreachable'
	list icmp_type 'packet-too-big'
	list icmp_type 'time-exceeded'
	list icmp_type 'bad-header'
	list icmp_type 'unknown-header-type'
	option limit '1000/sec'
	option family 'ipv6'
	option target 'ACCEPT'

config rule
	option name 'Allow-IPSec-ESP'
	option src 'wan'
	option dest 'lan'
	option proto 'esp'
	option target 'ACCEPT'

config rule
	option name 'Allow-ISAKMP'
	option src 'wan'
	option dest 'lan'
	option dest_port '500'
	option proto 'udp'
	option target 'ACCEPT'

config include
	option path '/etc/firewall.user'

config rule 'ovpn'
	option name 'Allow-OpenVPN'
	option src 'wan'
	option dest_port '1194'
	option proto 'udp'
	option target 'ACCEPT'

config include 'miniupnpd'
	option type 'script'
	option path '/usr/share/miniupnpd/firewall.include'
	option family 'any'
	option reload '1'

/etc/config/wireless

config wifi-device 'radio0'
	option type 'mac80211'
	option hwmode '11a'
	option path 'soc/soc:pcie/pci0000:00/0000:00:01.0/0000:01:00.0'
	option htmode 'VHT80'
	option country 'US'
	option legacy_rates '0'
	option channel '161'

config wifi-device 'radio1'
	option type 'mac80211'
	option channel '11'
	option hwmode '11g'
	option path 'soc/soc:pcie/pci0000:00/0000:00:02.0/0000:02:00.0'
	option htmode 'HT20'
	option disabled '1'
	option country 'US'

config wifi-device 'radio2'
	option type 'mac80211'
	option path 'platform/soc/soc:internal-regs/f10d8000.sdhci/mmc_host/mmc0/mmc0:0001/mmc0:0001:1'
	option legacy_rates '0'
	option hwmode '11a'
	option htmode 'VHT80'
	option channel 'auto'

config wifi-iface 'wifinet1'
	option ssid ''
	option encryption 'psk2'
	option device 'radio0'
	option mode 'ap'
	option network 'lan'
	option key ''
2

Please post /etc/config/network as well.

Do you have a reason for operating wan6 as a bridge? Perhaps this was turned on accidentally when you configured wireless. Try turning off bridging in the physical settings of the wan6 interface.

1 Like
3

Thanks, see below for network config.

config interface 'loopback'
        option ifname 'lo'
        option proto 'static'
        option ipaddr '127.0.0.1'
        option netmask '255.0.0.0'

config globals 'globals'
        option ula_prefix 'fd1b:75ec:09f6::/48'

config interface 'lan'
        option type 'bridge'
        option ifname 'eth0.1'
        option proto 'static'
        option ipaddr '192.168.2.1'
        option netmask '255.255.255.0'
        option ip6assign '60'
        list dns '1.1.1.1'
        list dns '1.0.0.1'
        list dns '2606:4700:4700::1111'
        list dns '2606:4700:4700::1001'

config interface 'wan'
        option ifname 'eth1.2'
        option proto 'dhcp'
        option type 'bridge'
        list dns '1.1.1.1'
        list dns '1.0.0.1'
        list dns '2606:4700:4700::1111'
        list dns '2606:4700:4700::1001'
        option peerdns '0'

config interface 'wan6'
        option ifname 'eth1.2'
        option proto 'dhcpv6'
        option type 'bridge'

config switch
        option name 'switch0'
        option reset '1'
        option enable_vlan '1'

config switch_vlan
        option device 'switch0'
        option vlan '1'
        option ports '0 1 2 3 5t'

config switch_vlan
        option device 'switch0'
        option vlan '2'
        option ports '4 6t'

I'm not sure how that happened. I never checked that box. All I did was install some packages, install updated mwlwifi drivers, and configure DNS over TLS.

I also configured some of the wireless settings and changed a lot troubleshooting the WRT32X's wireless problems so maybe it happened when I removed the wireless config.

I unchecked "bridged interfaces" and rebooted the router. The error is no longer there but it doesn't seem to be handing out IPs...

Screen Shot 2021-02-12 at 14.07.10
Screen Shot 2021-02-12 at 14.07.101886×218 42.4 KB

4

Do the same for the wan interface.
If the problem persists, post /etc/config/dhcp.

Perhaps unrelated, but you should remove the DNS entries from the lan interface.

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5

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