Do these 3 things before closing this tab:
1Repair Windows errors before they cause bigger problems2Fix the driver behind crashes, sound loss and screen glitches3Clear out junk files and repair common Windows errorsIf WireGuard connects but you cannot reach devices on the remote home or office network, check whether the network you are currently using overlaps with the remote LAN. When both use the same or intersecting IP ranges, your device may send traffic to its local network instead of through the VPN. That is a routing conflict—not proof that the tunnel itself is broken.
Why overlapping router networks can break access
Your device decides where to send traffic by matching destination addresses to routes. A local Wi-Fi network and a remote LAN behind WireGuard need distinguishable network prefixes. If both use the same or intersecting range, a route for the local network can capture traffic intended for the remote one.
As an Amazon Associate I earn from qualifying purchases.
For example, seeing a familiar router address such as 192.168.1.1 at both locations is a clue, but compare the full network prefixes and masks—not just the router’s last address. A subnet such as 192.168.1.0/24 covers a different set of addresses from a narrower or broader prefix that may overlap it.
This is a plausible cause when a tunnel is active but remote LAN devices remain unreachable. It is not an explanation for every WireGuard problem, and the available documentation does not establish how often this conflict occurs.
#1 Best Overall
- DUAL-BAND WIFI 6 ROUTER: Wi-Fi 6(802.11ax) technology achieves faster speeds, greater capacity and reduced network congestion compared to the previous gen. All WiFi routers require a separate modem. Dual-Band WiFi routers do not support the 6 GHz band.
- AX1800: Enjoy smoother and more stable streaming, gaming, downloading with 1.8 Gbps total bandwidth (up to 1200 Mbps on 5 GHz and up to 574 Mbps on 2.4 GHz). Performance varies by conditions, distance to devices, and obstacles such as walls.
- CONNECT MORE DEVICES: Wi-Fi 6 technology communicates more data to more devices simultaneously using revolutionary OFDMA technology
- EXTENSIVE COVERAGE: Achieve the strong, reliable WiFi coverage with Archer AX1800 as it focuses signal strength to your devices far away using Beamforming technology, 4 high-gain antennas and an advanced front-end module (FEM) chipset
- OUR CYBERSECURITY COMMITMENT: TP-Link is a signatory of the U.S. Cybersecurity and Infrastructure Security Agency’s (CISA) Secure-by-Design pledge. This device is designed, built, and maintained, with advanced security as a core requirement.
Check the ranges before changing settings
- Write down the client’s current LAN prefix and mask. Use the network details on the device you are connecting from; the local network may change as you travel.
- Record the remote LAN prefix and mask. This is the network containing the device you want to reach, not the WireGuard tunnel’s own address range.
- Record the tunnel addresses and inspect routes. Ubuntu’s WireGuard guide demonstrates checking interface addresses, routing entries, and peer handshake status: Ubuntu WireGuard troubleshooting.
- Confirm the tunnel is active, then test a remote device by IP address. A successful handshake does not confirm that LAN routes, forwarding, or firewall rules allow access.
If the local and remote LAN prefixes are identical or intersect, the overlap is a strong candidate. If they do not overlap, continue checking the peer configuration, routes, firewall, forwarding, and—if you are using names rather than addresses—DNS.
Choose which LAN to renumber
Changing one side to a LAN prefix that does not overlap the other involved networks is a documented remedy. Choose based on your topology and which network is less disruptive to change; there is no universally correct replacement range.
Rank #2
- Dual-band Wi-Fi with 5 GHz speeds up to 867 Mbps and 2.4 GHz speeds up to 300 Mbps, delivering 1200 Mbps of total bandwidth¹. Dual-band routers do not support 6 GHz. Performance varies by conditions, distance to devices, and obstacles such as walls.
- Covers up to 1,000 sq. ft. with four external antennas for stable wireless connections and optimal coverage.
- Supports IGMP Proxy/Snooping, Bridge and Tag VLAN to optimize IPTV streaming
- Access Point Mode - Supports AP Mode to transform your wired connection into wireless network, an ideal wireless router for home
- Advanced Security with WPA3 - The latest Wi-Fi security protocol, WPA3, brings new capabilities to improve cybersecurity in personal networks
- Consider how many devices, static addresses, reservations, or other network configurations would be affected on each side.
- Choose a prefix that avoids the other LANs involved, including networks the traveling client commonly uses.
- Expect the gateway address used by local devices to change. Clients may need to reconnect, and manually configured addresses or DHCP-related assumptions may need updating.
Router menus and steps differ by make and firmware. GL.iNet’s example uses a GL-AX1800 server and GL-SFT1200 client, and changes the client LAN address to 192.168.10.1. That value is specific to its example; check that any range you choose is unused in your own topology. See GL.iNet’s WireGuard server guide.
Update WireGuard peer prefixes and routes
Renumbering a LAN is only part of the repair. The WireGuard peer configuration and any routes must still describe where that LAN can be reached.
Rank #3
- NIGHTHAWK WIFI 6 ROUTER FOR YOUR WHOLE HOME: Delivers fast, reliable WiFi across every room of your apartment or small home for streaming, gaming, video calls, and smart home devices, all running at the same time without slowing each other down.
- WORKS WITH YOUR EXISTING INTERNET SERVICE: Pairs with your existing modem or gateway via ethernet. Compatible with most cable, fiber, DSL, and satellite providers. Some gateways and modem router combos may require bridge mode. No coax needed.
- SET UP AND MANAGE YOUR NETWORK WITH THE NIGHTHAWK APP: Download the free Nighthawk app on iOS or Android for guided setup. Manage WiFi, run speed tests, pause devices, and set up guest networks from anywhere. Active internet required.
- READY FOR THE DEVICES YOU ALREADY OWN: Your phones, laptops, and TVs work right out of the box. WiFi 6 delivers speeds up to 1.8 Gbps across 2.4 GHz and 5 GHz bands. Backward compatible with WiFi 5 and earlier.
- COVERAGE IN EVERY ROOM: Covers up to 1,500 sq. ft. for up to 20 connected devices. Walls, floors, and interference can reduce range. Larger or multi-story homes may benefit from a NETGEAR Orbi mesh WiFi system.
AllowedIPs has two roles: it selects a peer for outgoing traffic to matching destination prefixes, and it limits which source addresses are accepted from that peer after decryption. Ubuntu explains both functions in its WireGuard configuration guide. Make sure the intended remote LAN prefix is included on the relevant peer and that routes direct that traffic through WireGuard.
In GL.iNet’s documented example, the operator changes the client LAN address, adds 192.168.10.0/24 to the server’s WireGuard configuration and Allowed IPs, and adds a route through wg0. MikroTik’s site-to-site example likewise configures peer allowed-address prefixes alongside interface addresses, routes, and firewall rules. These are vendor- and topology-specific examples, not universal settings; see MikroTik’s WireGuard manual.
Rank #4
- 𝐅𝐮𝐭𝐮𝐫𝐞-𝐏𝐫𝐨𝐨𝐟 𝐘𝐨𝐮𝐫 𝐇𝐨𝐦𝐞 𝐖𝐢𝐭𝐡 𝐖𝐢-𝐅𝐢 𝟕: Powered by Wi-Fi 7 technology, enjoy faster speeds with Multi-Link Operation, increased reliability with Multi-RUs, and more data capacity with 4K-QAM, delivering enhanced performance for all your devices.
- 𝐁𝐄𝟑𝟔𝟎𝟎 𝐃𝐮𝐚𝐥-𝐁𝐚𝐧𝐝 𝐖𝐢-𝐅𝐢 𝟕 𝐑𝐨𝐮𝐭𝐞𝐫: Delivers up to 2882 Mbps (5 GHz), and 688 Mbps (2.4 GHz) speeds for 4K/8K streaming, AR/VR gaming & more. Dual-band routers do not support 6 GHz. Performance varies by conditions, distance, and obstacles like walls.
- 𝐔𝐧𝐥𝐞𝐚𝐬𝐡 𝐌𝐮𝐥𝐭𝐢-𝐆𝐢𝐠 𝐒𝐩𝐞𝐞𝐝𝐬 𝐰𝐢𝐭𝐡 𝐃𝐮𝐚𝐥 𝟐.𝟓 𝐆𝐛𝐩𝐬 𝐏𝐨𝐫𝐭𝐬 𝐚𝐧𝐝 𝟑×𝟏𝐆𝐛𝐩𝐬 𝐋𝐀𝐍 𝐏𝐨𝐫𝐭𝐬: Maximize Gigabitplus internet with one 2.5G WAN/LAN port, one 2.5 Gbps LAN port, plus three additional 1 Gbps LAN ports. Break the 1G barrier for seamless, high-speed connectivity from the internet to multiple LAN devices for enhanced performance.
- 𝐍𝐞𝐱𝐭-𝐆𝐞𝐧 𝟐.𝟎 𝐆𝐇𝐳 𝐐𝐮𝐚𝐝-𝐂𝐨𝐫𝐞 𝐏𝐫𝐨𝐜𝐞𝐬𝐬𝐨𝐫: Experience power and precision with a state-of-the-art processor that effortlessly manages high throughput. Eliminate lag and enjoy fast connections with minimal latency, even during heavy data transmissions.
- 𝐂𝐨𝐯𝐞𝐫𝐚𝐠𝐞 𝐟𝐨𝐫 𝐄𝐯𝐞𝐫𝐲 𝐂𝐨𝐫𝐧𝐞𝐫 - Covers up to 2,000 sq. ft. for up to 60 devices at a time. 4 internal antennas and beamforming technology focus Wi-Fi signals toward hard-to-reach areas. Seamlessly connect phones, TVs, and gaming consoles.
Decide whether the client needs split or full tunneling
Subnet-conflict repair does not require every client to send all internet traffic through the VPN. The choice depends on which destinations you intend to reach.
The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →| Configuration | What it routes | When it fits |
|---|---|---|
| Split tunnel | Only the VPN and specified remote LAN prefixes are sent through the peer. | When you need access to particular remote networks while other traffic uses the client’s usual connection. |
| Full tunnel | A client prefix such as 0.0.0.0/0 routes all IPv4 destinations through the peer, making it the default gateway in Ubuntu’s documented configuration. |
When you intend all IPv4 traffic to go through that peer. This is a broader routing choice, not a required fix for overlapping LANs. |
For IPv6, configuration may also include ::/0; do not assume an IPv4 route covers it. MikroTik says its generated client configuration uses 0.0.0.0/0, ::/0 by default, and that client-allowed-address can adjust this starting with RouterOS 7.21. Its guide says that on older versions, the generated value is fixed and can only be changed on the remote peer. Check the manual for the RouterOS version you run rather than applying that behavior to other vendors.
Best Value
- Dual band router upgrades to 1200 Mbps high speed internet (300mbps for 2.4GHz plus 900Mbps for 5GHz), reducing buffering and ideal for 4K stream
- Full Gigabit Ports - Gigabit Router with 4 Gigabit LAN ports, ideal for any internet plan and allow you to directly connect your wired devices
- Boosted Coverage - Four external antennas equipped with Beamforming technology extend and concentrate the Wi-Fi signals
- MU-MIMO technology - (5GHz band) allows high speeds for multiple devices simultaneously
- Access Point Mode - Supports AP Mode to transform your wired connection into wireless network, an ideal wireless router for home
Check firewall and forwarding rules
Even with distinct prefixes and correct routes, firewall policy can prevent the tunnel or LAN traffic from working. Router-to-router access may require forwarding rules and routes on both sides. MikroTik documents that its default firewall can block WireGuard tunnel establishment unless the WireGuard UDP port is accepted, and that access to router services needs an appropriate input rule or interface-list policy. Those details apply to the documented MikroTik setup, not automatically to every router.
After changes, reconnect clients if needed and test the remote destination by IP address. If it remains unreachable, verify the current routes, peer AllowedIPs, firewall policy, and forwarding on the path; an overlap may have been only one of several issues.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Quick wins for a faster PC:
Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →
