Hello guys,
we are facing an issue with remote access VPN and WSL2. The problem is in packet fragmentation. When a TCP packet is originated directly from the windows system it has the correct Maximum segment size value (1310). But when the packet is originated from WLS2 it has MSS 1460. The packet fragmentation does not work and for example, TSL session will fail.
We are fixing it with this workaround script in WSL.
#/bin/bash
ADVMSS=1310
DEFAULT_ROUTE=$(ip route | grep "default")
ip route del $DEFAULT_ROUTE
ip route add $DEFAULT_ROUTE advmss $ADVMSS
:
if ip route | grep -q "advmss $ADVMSS"; then
echo "MSS is ok"
else
echo "MSS is not ok"
fi
Is anyone having the same issue? What is your solution?
