M43R

About

• I faced bandwidth issues between a WG Peer and a WG server. Download bandwidth when downloading from WG Server to WG peer was reduced significantly and upload bandwidth was practically non existent.
• I found a few reddit posts that said that we need to choose the right MTU. So I wrote a script to find an optimal MTU.
• Ideally I would have liked to have run all possible MTU configurations for both WG Server and WG Peer but for simplicity I choose to fix the WG Server to the original 1420 MTU and tried all MTUs from 1280 to 1500 for the WG Peer.

Testing

• On WG server, I started an iperf3 server
• On WG peer, I wrote a script that does the following:
  • wg-quick down wg0
• Edit MTU in the /etc/wireguard/wg0.conf file

M43R

$domainSearchList = Read-Host "Please enter a list of domain suffixes separated by semicolons (e.g. domain.local;domain.tld;int.domain.tld)"
$scopeToConfigure = Read-Host "Please enter the scope id of the scope to be configured (e.g. 192.168.1.0)"

$splittedDomainSearchList = $domainSearchList -split "\;"
$domainSearchListHexArray = @();

Foreach ($domain in $splittedDomainSearchList) 
{
    $splittedDomainParts = $domain -split "\."
    Foreach ($domainPart in $splittedDomainParts) 

M43R

:local queueName "Client-$leaseActMAC";
 
:local ipAdd "$leaseActIP/32"; 

:if ([:len [/queue simple find name=$queueName]] = 0) do={
:log info "No Queue";
        /queue simple add name=$queueName target=($ipAdd) limit-at=10M/4M max-limit=10M/4M comment=[/ip dhcp-server lease get [find where active-mac-address=$leaseActMAC && active-address=$leaseActIP] host-name];
    } else={
:log info "exists";
:local ada [/queue simple get [find name=$queueName] target];