Hello! Installed OpenWrt 23.05.5 on Xiaomi Mi Router 4A Gigabit Edition (moved from native firmware to install VPN on router). Made no changes to config, only installed password on radio0 and radio1 and enabled them. Internet is ok on clients via cable and via wi-fi. But trying to do opkg update throws error "Failed to send request: Operation not permitted". I searched web for solution, came to the DNS problem. Configured custom dns to all standard interfaces, applied changes, reboot but no use. Still ping 1.1.1.1 ok, ping google.com - bad address.
Pings from clients working ok (so DNS on clients is working)
Ping and nslookup from router:
root@OpenWrt:~# ping google.com
ping: bad address 'google.com'
root@OpenWrt:~# nslookup google.com
Server: 127.0.0.1
Address: 127.0.0.1:53
Non-authoritative answer:
Name: google.com
Address: 142.250.74.110
*** Can't find google.com: No answer
root@OpenWrt:~# cat /etc/resolv.conf
search lan
nameserver 127.0.0.1
nameserver ::1
root@OpenWrt:~# cat /etc/config/network
config interface 'loopback'
option device 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'
config globals 'globals'
option ula_prefix 'fd61:8fbb:5541::/48'
option packet_steering '1'
config device
option name 'br-lan'
option type 'bridge'
list ports 'lan1'
list ports 'lan2'
config interface 'lan'
option device 'br-lan'
option proto 'static'
option ipaddr '192.168.1.1'
option netmask '255.255.255.0'
option ip6assign '60'
list dns '1.1.1.1'
list dns '1.0.0.1'
list dns '8.8.8.8'
list dns '8.8.4.4'
list dns '77.88.8.1'
list dns '77.88.8.8'
config interface 'wan'
option device 'wan'
option proto 'dhcp'
option peerdns '0'
list dns '77.88.8.1'
list dns '8.8.8.8'
list dns '8.8.4.4'
list dns '1.1.1.1'
config interface 'wan6'
option device 'wan'
option proto 'dhcpv6'
option reqaddress 'try'
option reqprefix 'auto'
option peerdns '0'
list dns '8.8.8.8'
list dns '1.1.1.1'
list dns '8.8.4.4'
list dns '1.0.0.1'
list dns '77.88.8.1'
list dns '77.88.8.8'
Internet is provided via Dynamic Ip (DHCP).
Don't use IPv4 addresses in the wan6 (IPv6) section:
Aside from that, lets see what happens when you run the following from the router:
nslookup openwrt.org 8.8.8.8
nslookup openwrt.org
And let's also see:
cat /etc/config/firewall
cat /etc/config/dhcp
Corrected DNS entries for IPv6, thanks!
There is output of listed commands:
root@OpenWrt:~# nslookup openwrt.org 8.8.8.8
gServer: 8.8.8.8
Address: 8.8.8.8:53
Non-authoritative answer:
Name: openwrt.org
Address: 64.226.122.113
*** Can't find openwrt.org: No answer
root@OpenWrt:~# nslookup openwrt.org
Server: 127.0.0.1
Address: 127.0.0.1:53
Non-authoritative answer:
Name: openwrt.org
Address: 64.226.122.113
*** Can't find openwrt.org: No answer
root@OpenWrt:~# cat /etc/config/firewall
config defaults
option syn_flood 1
option input REJECT
option output ACCEPT
option forward REJECT
# Uncomment this line to disable ipv6 rules
# option disable_ipv6 1
config zone
option name lan
list network 'lan'
option input ACCEPT
option output ACCEPT
option forward ACCEPT
config zone
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
# We need to accept udp packets on port 68,
# see https://dev.openwrt.org/ticket/4108
config rule
option name Allow-DHCP-Renew
option src wan
option proto udp
option dest_port 68
option target ACCEPT
option family ipv4
# Allow IPv4 ping
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
# Allow DHCPv6 replies
# see https://github.com/openwrt/openwrt/issues/5066
config rule
option name Allow-DHCPv6
option src wan
option proto udp
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
# Allow essential incoming IPv6 ICMP traffic
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
# Allow essential forwarded IPv6 ICMP traffic
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
### EXAMPLE CONFIG SECTIONS
# do not allow a specific ip to access wan
#config rule
# option src lan
# option src_ip 192.168.45.2
# option dest wan
# option proto tcp
# option target REJECT
# block a specific mac on wan
#config rule
# option dest wan
# option src_mac 00:11:22:33:44:66
# option target REJECT
# block incoming ICMP traffic on a zone
#config rule
# option src lan
# option proto ICMP
# option target DROP
# port redirect port coming in on wan to lan
#config redirect
# option src wan
# option src_dport 80
# option dest lan
# option dest_ip 192.168.16.235
# option dest_port 80
# option proto tcp
# port redirect of remapped ssh port (22001) on wan
#config redirect
# option src wan
# option src_dport 22001
# option dest lan
# option dest_port 22
# option proto tcp
### FULL CONFIG SECTIONS
#config rule
# option src lan
# option src_ip 192.168.45.2
# option src_mac 00:11:22:33:44:55
# option src_port 80
# option dest wan
# option dest_ip 194.25.2.129
# option dest_port 120
# option proto tcp
# option target REJECT
#config redirect
# option src lan
# option src_ip 192.168.45.2
# option src_mac 00:11:22:33:44:55
# option src_port 1024
# option src_dport 80
# option dest_ip 194.25.2.129
# option dest_port 120
# option proto tcp
root@OpenWrt:~# cat /etc/config/dhcp
config dnsmasq
option domainneeded '1'
option boguspriv '1'
option filterwin2k '0'
option localise_queries '1'
option rebind_protection '1'
option rebind_localhost '1'
option local '/lan/'
option domain 'lan'
option expandhosts '1'
option nonegcache '0'
option cachesize '1000'
option authoritative '1'
option readethers '1'
option leasefile '/tmp/dhcp.leases'
option resolvfile '/tmp/resolv.conf.d/resolv.conf.auto'
option nonwildcard '1'
option localservice '1'
option ednspacket_max '1232'
option filter_aaaa '0'
option filter_a '0'
config dhcp 'lan'
option interface 'lan'
option start '100'
option limit '150'
option leasetime '12h'
option dhcpv4 'server'
option dhcpv6 'server'
option ra 'server'
list ra_flags 'managed-config'
list ra_flags 'other-config'
config dhcp 'wan'
option interface 'wan'
option ignore '1'
config odhcpd 'odhcpd'
option maindhcp '0'
option leasefile '/tmp/hosts/odhcpd'
option leasetrigger '/usr/sbin/odhcpd-update'
option loglevel '4'
root@OpenWrt:~#
Try removing all the DNS values from the lan interface (they don't really apply here anyway). Then restart and run the nslookup tests again.
Changed etc/config/network, then rebooted router:
root@OpenWrt:~# nslookup openwrt.org 8.8.8.8
Server: 8.8.8.8
Address: 8.8.8.8:53
Non-authoritative answer:
Name: openwrt.org
Address: 64.226.122.113
*** Can't find openwrt.org: No answer
root@OpenWrt:~# nslookup openwrt.org
Server: 127.0.0.1
Address: 127.0.0.1:53
Non-authoritative answer:
Name: openwrt.org
Address: 64.226.122.113
*** Can't find openwrt.org: No answer
root@OpenWrt:~# ping google.com
ping: bad address 'google.com'
root@OpenWrt:~# cat /etc/resolv.conf
search lan
nameserver 127.0.0.1
nameserver ::1
root@OpenWrt:~# cat /etc/config/network
config interface 'loopback'
option device 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'
config globals 'globals'
option ula_prefix 'fd56:af2e:6ca6::/48'
option packet_steering '1'
config device
option name 'br-lan'
option type 'bridge'
list ports 'lan1'
list ports 'lan2'
config interface 'lan'
option device 'br-lan'
option proto 'static'
option ipaddr '192.168.1.1'
option netmask '255.255.255.0'
option ip6assign '60'
config interface 'wan'
option device 'wan'
option proto 'dhcp'
option peerdns '0'
list dns '8.8.8.8'
list dns '8.8.4.4'
config interface 'wan6'
option device 'wan'
option proto 'dhcpv6'
can you post the output ofopkg list
probably better to get the output of opkg list-installed
root@OpenWrt:~# opkg list-installed
base-files - 1562-r24106-10cc5fcd00
busybox - 1.36.1-1
ca-bundle - 20230311-1
cgi-io - 2022-08-10-901b0f04-21
dnsmasq - 2.90-2
dropbear - 2022.82-6
firewall4 - 2023-09-01-598d9fbb-1
fstools - 2023-02-28-bfe882d5-1
fwtool - 2019-11-12-8f7fe925-1
getrandom - 2022-08-13-4c7b720b-2
hostapd-common - 2023-09-08-e5ccbfc6-8
iw - 5.19-1
iwinfo - 2023-07-01-ca79f641-1
jansson4 - 2.14-3
jshn - 2023-05-23-75a3b870-1
jsonfilter - 2024-01-23-594cfa86-1
kernel - 5.15.167-1-144de9e5c1a8813b724b14faa054d9f0
kmod-cfg80211 - 5.15.167+6.1.110-1-1
kmod-crypto-acompress - 5.15.167-1
kmod-crypto-aead - 5.15.167-1
kmod-crypto-ccm - 5.15.167-1
kmod-crypto-cmac - 5.15.167-1
kmod-crypto-crc32c - 5.15.167-1
kmod-crypto-ctr - 5.15.167-1
kmod-crypto-gcm - 5.15.167-1
kmod-crypto-gf128 - 5.15.167-1
kmod-crypto-ghash - 5.15.167-1
kmod-crypto-hash - 5.15.167-1
kmod-crypto-hmac - 5.15.167-1
kmod-crypto-manager - 5.15.167-1
kmod-crypto-null - 5.15.167-1
kmod-crypto-rng - 5.15.167-1
kmod-crypto-seqiv - 5.15.167-1
kmod-crypto-sha512 - 5.15.167-1
kmod-gpio-button-hotplug - 5.15.167-3
kmod-leds-gpio - 5.15.167-1
kmod-lib-crc-ccitt - 5.15.167-1
kmod-lib-crc32c - 5.15.167-1
kmod-lib-lzo - 5.15.167-1
kmod-mac80211 - 5.15.167+6.1.110-1-1
kmod-mt76-core - 5.15.167+2024-04-03-1e336a85-1
kmod-mt7603 - 5.15.167+2024-04-03-1e336a85-1
kmod-mt76x02-common - 5.15.167+2024-04-03-1e336a85-1
kmod-mt76x2 - 5.15.167+2024-04-03-1e336a85-1
kmod-mt76x2-common - 5.15.167+2024-04-03-1e336a85-1
kmod-nf-conntrack - 5.15.167-1
kmod-nf-conntrack6 - 5.15.167-1
kmod-nf-flow - 5.15.167-1
kmod-nf-log - 5.15.167-1
kmod-nf-log6 - 5.15.167-1
kmod-nf-nat - 5.15.167-1
kmod-nf-reject - 5.15.167-1
kmod-nf-reject6 - 5.15.167-1
kmod-nfnetlink - 5.15.167-1
kmod-nft-core - 5.15.167-1
kmod-nft-fib - 5.15.167-1
kmod-nft-nat - 5.15.167-1
kmod-nft-offload - 5.15.167-1
kmod-ppp - 5.15.167-1
kmod-pppoe - 5.15.167-1
kmod-pppox - 5.15.167-1
kmod-slhc - 5.15.167-1
libblobmsg-json20230523 - 2023-05-23-75a3b870-1
libc - 1.2.4-4
libgcc1 - 12.3.0-4
libiwinfo-data - 2023-07-01-ca79f641-1
libiwinfo20230701 - 2023-07-01-ca79f641-1
libjson-c5 - 0.16-3
libjson-script20230523 - 2023-05-23-75a3b870-1
liblucihttp-ucode - 2023-03-15-9b5b683f-1
liblucihttp0 - 2023-03-15-9b5b683f-1
libmbedtls12 - 2.28.9-1
libmnl0 - 1.0.5-1
libnftnl11 - 1.2.6-1
libnl-tiny1 - 2023-07-27-bc92a280-1
libpthread - 1.2.4-4
libubox20230523 - 2023-05-23-75a3b870-1
libubus20230605 - 2023-06-05-f787c97b-1
libuci20130104 - 2023-08-10-5781664d-1
libuclient20201210 - 2023-04-13-007d9454-1
libucode20230711 - 2024-07-11-1a8a0bcf-3
libustream-mbedtls20201210 - 2023-02-25-498f6e26-1
logd - 2022-08-13-4c7b720b-2
luci - git-23.051.66410-a505bb1
luci-app-firewall - git-24.067.01746-69867db
luci-app-opkg - git-24.148.43905-2891ca4
luci-base - git-24.264.56413-c7a3562
luci-light - git-23.024.33244-34dee82
luci-mod-admin-full - git-19.253.48496-3f93650
luci-mod-network - git-24.264.56960-63ba3cb
luci-mod-status - git-24.212.61237-b6da3f2
luci-mod-system - git-24.067.01860-7a82b2f
luci-proto-ipv6 - git-24.086.45108-51aee90
luci-proto-ppp - git-24.135.44542-f1ec9c2
luci-ssl - git-23.035.26083-7550ad6
luci-theme-bootstrap - git-24.086.46634-1ffe078
mtd - 26
netifd - 2024-01-04-c18cc79d-2
nftables-json - 1.0.8-1
odhcp6c - 2023-05-12-bcd28363-20
odhcpd-ipv6only - 2023-10-24-d8118f6e-1
openwrt-keyring - 2022-03-25-62471e69-2
opkg - 2022-02-24-d038e5b6-2
ppp - 2.4.9.git-2021-01-04-4
ppp-mod-pppoe - 2.4.9.git-2021-01-04-4
procd - 2023-06-25-2db83655-2
procd-seccomp - 2023-06-25-2db83655-2
procd-ujail - 2023-06-25-2db83655-2
px5g-mbedtls - 10
rpcd - 2023-07-01-c07ab2f9-1
rpcd-mod-file - 2023-07-01-c07ab2f9-1
rpcd-mod-iwinfo - 2023-07-01-c07ab2f9-1
rpcd-mod-luci - 20240305-1
rpcd-mod-rrdns - 20170710
rpcd-mod-ucode - 2023-07-01-c07ab2f9-1
ubi-utils - 2.1.5-1
ubox - 2022-08-13-4c7b720b-2
ubus - 2023-06-05-f787c97b-1
ubusd - 2023-06-05-f787c97b-1
uci - 2023-08-10-5781664d-1
uclient-fetch - 2023-04-13-007d9454-1
ucode - 2024-07-11-1a8a0bcf-3
ucode-mod-fs - 2024-07-11-1a8a0bcf-3
ucode-mod-html - 1
ucode-mod-math - 2024-07-11-1a8a0bcf-3
ucode-mod-nl80211 - 2024-07-11-1a8a0bcf-3
ucode-mod-rtnl - 2024-07-11-1a8a0bcf-3
ucode-mod-ubus - 2024-07-11-1a8a0bcf-3
ucode-mod-uci - 2024-07-11-1a8a0bcf-3
ucode-mod-uloop - 2024-07-11-1a8a0bcf-3
uhttpd - 2023-06-25-34a8a74d-2
uhttpd-mod-ubus - 2023-06-25-34a8a74d-2
urandom-seed - 3
urngd - 2023-11-01-44365eb1-1
usign - 2020-05-23-f1f65026-1
wireless-regdb - 2024.07.04-1
wpad-basic-mbedtls - 2023-09-08-e5ccbfc6-8
without updating the output should be similar
the main problem is that the ipv6 reply from dns server is not being received by dnsmasq. did you disable some ipv6 configuration?
Nope, all i did with fresh installation is:
If you don't have a proper dual-stack, try simply removing the wan6 interface. Restart and test again.
Now interfaces page looks like that; Rebooted device
But still
root@OpenWrt:~# nslookup openwrt.com 8.8.8.8
Server: 8.8.8.8
Address: 8.8.8.8:53
Non-authoritative answer:
Name: openwrt.com
Address: 5.8.93.86
*** Can't find openwrt.com: No answer
Yes, i don't have an ipv6 support by my provider at all. Maybe it was worth mentioning from the start
root@OpenWrt:~# ping duckduckgo.com
ping: bad address 'duckduckgo.com'
root@OpenWrt:~# nslookup duckduckgo.com
Server: 127.0.0.1
Address: 127.0.0.1:53
Non-authoritative answer:
Name: duckduckgo.com
Address: 40.114.177.156
*** Can't find duckduckgo.com: No answer
NPeca75
December 7, 2024, 6:31pm
17
Hi @tenkovin
maybe your ISP is blocking port 53 forward
I doubt that... we do see results from the DNS lookups (non-authoritative, but still valid).
try to edit the /etc/config/dhcp file and replace the line
option filter_aaaa '0'
to
option filter_aaaa '1'
then restart the router and see the output of
nslookup duckduckgo.com
*not forget to save the file properly
1 Like
It helped!! Thank you! I have no clue how you came to that particular string on file but still!
root@OpenWrt:~# nslookup duckduckgo.com
Server: 127.0.0.1
Address: 127.0.0.1:53
Non-authoritative answer:
Name: duckduckgo.com
Address: 40.114.177.156
Non-authoritative answer:
root@OpenWrt:~# ping google.com
PING google.com (64.233.164.102): 56 data bytes
64 bytes from 64.233.164.102: seq=0 ttl=112 time=19.919 ms
64 bytes from 64.233.164.102: seq=1 ttl=112 time=19.883 ms
64 bytes from 64.233.164.102: seq=2 ttl=112 time=19.810 ms
^C
--- google.com ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max = 19.810/19.870/19.919 ms
Thank you everyone who answered. I really appreciated it
