Your system information

• Steam client version (build number or date): 1647446817
• Distribution (e.g. Ubuntu): Ubuntu 21.10 64-bit
• Opted into Steam client beta?: No
• Have you checked for system updates?: Yes

Please describe your issue in as much detail as possible:

After having done a successful network test from a Steam Link (App or hardware, doesn't matter), the connection to the streaming server fails (times out). Steam on the host server becomes completely unresponsive after that, and has to be force-killed.

Steam server log: https://gist.github.com/Goggo66/b01b658b705bc8be09cec8dcdf963cdf

Apparently, the IPCServer thread crashes:

src/steamexe/main.cpp (253) : Assertion Failed: reaping pid: 84132 -- CIPCServer::Thr
Installing breakpad exception handler for appid(steam)/version(1647446817)
assert_20220430175809_34.dmp[84145]: Uploading dump (out-of-process)
/tmp/dumps/assert_20220430175809_34.dmp
assert_20220430175809_34.dmp[84145]: Finished uploading minidump (out-of-process): success = yes
assert_20220430175809_34.dmp[84145]: response: CrashID=bp-a30a15d2-2232-49f8-a494-a8f062220430
assert_20220430175809_34.dmp[84145]: file ''/tmp/dumps/assert_20220430175809_34.dmp'', upload yes: ''CrashID=bp-a30a15d2-2232-49f8-a494-a8f062220430''

Dump file:
assert_20220430175809_34.zip

Steps for reproducing this issue:

1. Start Steam on the host server.
2. Start Steam Link on the client (e.g. Android Steam Link App)
3. In Steam Link, go to Settings | Streaming, and start the network test.
4. After successful network test, try to connect to streaming server.