Observed that the IPv4 address updates correctly while IPv6 traffic still uses ISP's IP indicates that WireGuard tunnel is not properly encapsulating IPv6 traffic.
Also observed DNS leaks.
Here are the logs
"kernel": "6.6.93",
"hostname": "OpenWrt",
"system": "ARMv7 Processor rev 0 (v7l)",
"model": "Linksys E8350 V1 WiFi Router",
"board_name": "linksys,e8350-v1",
"rootfs_type": "squashfs",
"release": {
"distribution": "OpenWrt",
"version": "24.10.2",
"revision": "r28739-d9340319c6",
"target": "ipq806x/generic",
"description": "OpenWrt 24.10.2 r28739-d9340319c6",
"builddate": "1750711236"
}
}
package 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 'fdb8:8576:1bb6::/48'
option packet_steering '1'
option steering_flows '128'
config device
option name 'br-lan'
option type 'bridge'
list ports 'lan1'
list ports 'lan2'
list ports 'lan3'
list ports 'lan4'
config device
option name 'lan1'
option macaddr 'c0:56:27:13:f8:7d'
config device
option name 'lan2'
option macaddr 'c0:56:27:13:f8:7d'
config device
option name 'lan3'
option macaddr 'c0:56:27:13:f8:7d'
config device
option name 'lan4'
option macaddr 'c0:56:27:13:f8:7d'
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 '8.8.8.8'
list dns '8.8.4.4'
config device
option name 'wan'
option macaddr 'c0:56:27:13:f8:7e'
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'
config interface 'wg0'
option proto 'wireguard'
option private_key '******'
list addresses '45.74.36.159'
list dns '45.74.36.2'
list dns '45.74.36.4'
config wireguard_wg0
option description 'India-wg.conf'
option public_key '*****'
list allowed_ips '0.0.0.0/0'
option persistent_keepalive '25'
option endpoint_host 'sx591235-wg.pointtoserver.com'
option endpoint_port '51820'
option route_allowed_ips '1'
package 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'
package firewall
config defaults
option input 'REJECT'
option output 'ACCEPT'
option forward 'REJECT'
option synflood_protect '1'
config zone
option name 'lan'
option input 'ACCEPT'
option output 'ACCEPT'
option forward 'ACCEPT'
list network 'lan'
config zone
option name 'wan'
option input 'REJECT'
option output 'ACCEPT'
option forward 'REJECT'
option masq '1'
option mtu_fix '1'
list network 'wan'
list network 'wan6'
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 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 zone
option name 'VPN'
option input 'REJECT'
option output 'ACCEPT'
option forward 'REJECT'
option masq '1'
option mtu_fix '1'
list network 'wg0'
config forwarding
option src 'lan'
option dest 'VPN'
head: /etc/firewall.user: No such file or directory
table inet fw4 {
chain input {
type filter hook input priority filter; policy drop;
iif "lo" accept comment "!fw4: Accept traffic from loopback"
ct state vmap { established : accept, related : accept } comment "!fw4: Handle inbound flows"
tcp flags & (fin | syn | rst | ack) == syn jump syn_flood comment "!fw4: Rate limit TCP syn packets"
udp dport 51819 counter packets 0 bytes 0 accept comment "!fw4: ubus:unetd[instance1] rule 0"
iifname "br-lan" jump input_lan comment "!fw4: Handle lan IPv4/IPv6 input traffic"
iifname "wan" jump input_wan comment "!fw4: Handle wan IPv4/IPv6 input traffic"
iifname "wg0" jump input_VPN comment "!fw4: Handle VPN IPv4/IPv6 input traffic"
jump handle_reject
}
chain forward {
type filter hook forward priority filter; policy drop;
ct state vmap { established : accept, related : accept } comment "!fw4: Handle forwarded flows"
iifname "br-lan" jump forward_lan comment "!fw4: Handle lan IPv4/IPv6 forward traffic"
iifname "wan" jump forward_wan comment "!fw4: Handle wan IPv4/IPv6 forward traffic"
iifname "wg0" jump forward_VPN comment "!fw4: Handle VPN IPv4/IPv6 forward traffic"
jump handle_reject
}
chain output {
type filter hook output priority filter; policy accept;
oif "lo" accept comment "!fw4: Accept traffic towards loopback"
ct state vmap { established : accept, related : accept } comment "!fw4: Handle outbound flows"
oifname "br-lan" jump output_lan comment "!fw4: Handle lan IPv4/IPv6 output traffic"
oifname "wan" jump output_wan comment "!fw4: Handle wan IPv4/IPv6 output traffic"
oifname "wg0" jump output_VPN comment "!fw4: Handle VPN IPv4/IPv6 output traffic"
}
chain prerouting {
type filter hook prerouting priority filter; policy accept;
iifname "br-lan" jump helper_lan comment "!fw4: Handle lan IPv4/IPv6 helper assignment"
}
chain handle_reject {
meta l4proto tcp reject with tcp reset comment "!fw4: Reject TCP traffic"
reject comment "!fw4: Reject any other traffic"
}
chain syn_flood {
limit rate 25/second burst 50 packets return comment "!fw4: Accept SYN packets below rate-limit"
drop comment "!fw4: Drop excess packets"
}
chain input_lan {
jump accept_from_lan
}
chain output_lan {
jump accept_to_lan
}
chain forward_lan {
jump accept_to_wan comment "!fw4: Accept lan to wan forwarding"
jump accept_to_VPN comment "!fw4: Accept lan to VPN forwarding"
jump accept_to_lan
}
chain helper_lan {
}
chain accept_from_lan {
iifname "br-lan" counter packets 615 bytes 48637 accept comment "!fw4: accept lan IPv4/IPv6 traffic"
}
chain accept_to_lan {
oifname "br-lan" counter packets 76 bytes 6232 accept comment "!fw4: accept lan IPv4/IPv6 traffic"
}
chain input_wan {
meta nfproto ipv4 udp dport 68 counter packets 0 bytes 0 accept comment "!fw4: Allow-DHCP-Renew"
icmp type echo-request counter packets 4 bytes 150 accept comment "!fw4: Allow-Ping"
meta nfproto ipv4 meta l4proto igmp counter packets 8 bytes 288 accept comment "!fw4: Allow-IGMP"
meta nfproto ipv6 udp dport 546 counter packets 0 bytes 0 accept comment "!fw4: Allow-DHCPv6"
ip6 saddr fe80::/10 icmpv6 type . icmpv6 code { mld-listener-query . 0, mld-listener-report . 0, mld-listener-done . 0, mld2-listener-report . 0 } counter packets 0 bytes 0 accept comment "!fw4: Allow-MLD"
icmpv6 type { destination-unreachable, time-exceeded, echo-request, echo-reply, nd-router-solicit, nd-router-advert } limit rate 1000/second burst 5 packets counter packets 4 bytes 584 accept comment "!fw4: Allow-ICMPv6-Input"
icmpv6 type . icmpv6 code { packet-too-big . 0, parameter-problem . 0, nd-neighbor-solicit . 0, nd-neighbor-advert . 0, parameter-problem . 1 } limit rate 1000/second burst 5 packets counter packets 102 bytes 7048 accept comment "!fw4: Allow-ICMPv6-Input"
jump reject_from_wan
}
chain output_wan {
jump accept_to_wan
}
chain forward_wan {
icmpv6 type { destination-unreachable, time-exceeded, echo-request, echo-reply } limit rate 1000/second burst 5 packets counter packets 0 bytes 0 accept comment "!fw4: Allow-ICMPv6-Forward"
icmpv6 type . icmpv6 code { packet-too-big . 0, parameter-problem . 0, parameter-problem . 1 } limit rate 1000/second burst 5 packets counter packets 0 bytes 0 accept comment "!fw4: Allow-ICMPv6-Forward"
meta l4proto esp counter packets 0 bytes 0 jump accept_to_lan comment "!fw4: Allow-IPSec-ESP"
udp dport 500 counter packets 0 bytes 0 jump accept_to_lan comment "!fw4: Allow-ISAKMP"
jump reject_to_wan
}
chain accept_to_wan {
meta nfproto ipv4 oifname "wan" ct state invalid counter packets 0 bytes 0 drop comment "!fw4: Prevent NAT leakage"
oifname "wan" counter packets 738 bytes 179020 accept comment "!fw4: accept wan IPv4/IPv6 traffic"
}
chain reject_from_wan {
iifname "wan" counter packets 200 bytes 12817 jump handle_reject comment "!fw4: reject wan IPv4/IPv6 traffic"
}
chain reject_to_wan {
oifname "wan" counter packets 0 bytes 0 jump handle_reject comment "!fw4: reject wan IPv4/IPv6 traffic"
}
chain input_VPN {
jump reject_from_VPN
}
chain output_VPN {
jump accept_to_VPN
}
chain forward_VPN {
jump reject_to_VPN
}
chain accept_to_VPN {
meta nfproto ipv4 oifname "wg0" ct state invalid counter packets 45 bytes 1800 drop comment "!fw4: Prevent NAT leakage"
oifname "wg0" counter packets 346 bytes 35299 accept comment "!fw4: accept VPN IPv4/IPv6 traffic"
}
chain reject_from_VPN {
iifname "wg0" counter packets 1542 bytes 77446 jump handle_reject comment "!fw4: reject VPN IPv4/IPv6 traffic"
}
chain reject_to_VPN {
oifname "wg0" counter packets 0 bytes 0 jump handle_reject comment "!fw4: reject VPN IPv4/IPv6 traffic"
}
chain dstnat {
type nat hook prerouting priority dstnat; policy accept;
}
chain srcnat {
type nat hook postrouting priority srcnat; policy accept;
oifname "wan" jump srcnat_wan comment "!fw4: Handle wan IPv4/IPv6 srcnat traffic"
oifname "wg0" jump srcnat_VPN comment "!fw4: Handle VPN IPv4/IPv6 srcnat traffic"
}
chain srcnat_wan {
meta nfproto ipv4 masquerade comment "!fw4: Masquerade IPv4 wan traffic"
}
chain srcnat_VPN {
meta nfproto ipv4 masquerade comment "!fw4: Masquerade IPv4 VPN traffic"
}
chain raw_prerouting {
type filter hook prerouting priority raw; policy accept;
}
chain raw_output {
type filter hook output priority raw; policy accept;
}
chain mangle_prerouting {
type filter hook prerouting priority mangle; policy accept;
}
chain mangle_postrouting {
type filter hook postrouting priority mangle; policy accept;
oifname "wan" tcp flags & (fin | syn | rst) == syn tcp option maxseg size set rt mtu comment "!fw4: Zone wan IPv4/IPv6 egress MTU fixing"
oifname "wg0" tcp flags & (fin | syn | rst) == syn tcp option maxseg size set rt mtu comment "!fw4: Zone VPN IPv4/IPv6 egress MTU fixing"
}
chain mangle_input {
type filter hook input priority mangle; policy accept;
}
chain mangle_output {
type route hook output priority mangle; policy accept;
}
chain mangle_forward {
type filter hook forward priority mangle; policy accept;
iifname "wan" tcp flags & (fin | syn | rst) == syn tcp option maxseg size set rt mtu comment "!fw4: Zone wan IPv4/IPv6 ingress MTU fixing"
iifname "wg0" tcp flags & (fin | syn | rst) == syn tcp option maxseg size set rt mtu comment "!fw4: Zone VPN IPv4/IPv6 ingress MTU fixing"
}
}
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
8: wan@eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
inet 104.12.207.218/22 brd 104.12.207.255 scope global wan
valid_lft forever preferred_lft forever
9: br-lan: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
inet 192.168.1.1/24 brd 192.168.1.255 scope global br-lan
valid_lft forever preferred_lft forever
12: wg0: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1420 qdisc noqueue state UNKNOWN group default qlen 1000
inet 45.74.36.159/32 brd 255.255.255.255 scope global wg0
valid_lft forever preferred_lft forever
default dev wg0 proto static scope link
104.12.204.0/22 dev wan proto kernel scope link src 104.12.207.218
149.34.253.94 via 104.12.204.1 dev wan proto static
192.168.1.0/24 dev br-lan proto kernel scope link src 192.168.1.1
local 45.74.36.159 dev wg0 table local proto kernel scope host src 45.74.36.159
local 104.12.207.218 dev wan table local proto kernel scope host src 104.12.207.218
broadcast 104.12.207.255 dev wan table local proto kernel scope link src 104.12.207.218
local 127.0.0.0/8 dev lo table local proto kernel scope host src 127.0.0.1
local 127.0.0.1 dev lo table local proto kernel scope host src 127.0.0.1
broadcast 127.255.255.255 dev lo table local proto kernel scope link src 127.0.0.1
local 192.168.1.1 dev br-lan table local proto kernel scope host src 192.168.1.1
broadcast 192.168.1.255 dev br-lan table local proto kernel scope link src 192.168.1.1
0: from all lookup local
32766: from all lookup main
32767: from all lookup default
lrwxrwxrwx 1 root root 16 Jun 23 20:40 /etc/resolv.conf -> /tmp/resolv.conf
-rw-r--r-- 1 root root 47 Jul 18 20:03 /tmp/resolv.conf
-rw-r--r-- 1 root root 238 Jul 18 20:09 /tmp/resolv.conf.d/resolv.conf.auto
/tmp/resolv.conf.d:
-rw-r--r-- 1 root root 238 Jul 18 20:09 resolv.conf.auto
==> /etc/resolv.conf <==
search lan
nameserver 127.0.0.1
nameserver ::1
==> /tmp/resolv.conf <==
search lan
nameserver 127.0.0.1
nameserver ::1
==> /tmp/resolv.conf.d <==
head: /tmp/resolv.conf.d: I/O error
==> /tmp/resolv.conf.d/resolv.conf.auto <==
# Interface lan
nameserver 8.8.8.8
nameserver 8.8.4.4
# Interface wan
nameserver 8.8.8.8
nameserver 8.8.4.4
# Interface wan6
nameserver 2600:1700:120:6ae0::1
search attlocal.net
# Interface wg0
nameserver 45.74.36.2
nameserver 45.74.36.4
