FreeBSD hlds_l ContentServerBlockingConnection.cpp error

After the latest steam client update, I’d get the following error when attempting to upgrade my Team Fortress 2 server installation:


Expr: ( close( m_pImpl->m_Socket ) ) == 0
Line: 587
File: ../Engine/Src/ContentServerBlockingConnection.cpp
Abort trap (core dumped)

I was able to resolve this problem by adding the following line to my /boot/loader.conf

debug.mpsafenet=0

I then re-mounted my linprocfs and the update proceeded as normal.