[TF2 SRCDS](Linux) SRCDS fails to reconnect to Steam CM

[coredesu]

Recently, our instances have been disconnected from Steam (with error code 3 - NoConnection), and only 80% of the servers has been able to reconnect to steam. Usually, all of the instances should have been able to reconnect to Steam successfully.

Server output of the failing instance (status)

hostname: qtland Matchmaking Server (Stockholm srcds1016-sto1 #3)
version : 9347162/24 9347162 secure
udp/ip  : ?.?.?.?:? 
steamid : not logged in
account : not logged in  (No account specified)
map     : cp_metalworks at: 0 x, 0 y, 0 z
tags    : cp,qtland
players : 0 humans, 0 bots (24 max)
edicts  : 454 used of 2048 max
# userid name                uniqueid            connected ping loss state

SRCDS output:

Connection to Steam servers successful.
Assigned anonymous gameserver Steam ID [A:1:2312915969:32391].
VAC secure mode is activated.
[S_API FAIL] Tried to access Steam interface SteamNetworkingUtils004 before SteamAPI_Init succeeded.
Connection to Steam servers lost.  (Result = 3)
Connection to Steam servers lost.  (Result = 3)
Connection to Steam servers successful.
Assigned anonymous gameserver Steam ID [A:1:2312915969:32391].
VAC secure mode is activated.
Connection to game coordinator established.
Current item schema is up-to-date with version 6909F7F0.
The item server is shutting down. Items will be unavailable temporarily.
Connection to Steam servers lost.  (Result = 3)
Connection to Steam servers lost.  (Result = 3)
src/clientdll/cminterface.cpp (3568) : m_VecNetAdrNetFilterCMs.Count()
src/clientdll/cminterface.cpp (3568) : m_VecNetAdrNetFilterCMs.Count()
assert_20241210230944_54.dmp[1831527]: Uploading dump (out-of-process)
/tmp/dumps/assert_20241210230944_54.dmp
assert_20241210230944_54.dmp[1831527]: Finished uploading minidump (out-of-process): success = yes
assert_20241210230944_54.dmp[1831527]: response: Discarded=1
assert_20241210230944_54.dmp[1831527]: file ''/tmp/dumps/assert_20241210230944_54.dmp'', upload yes: ''Discarded=1''