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guiwi

Member

Registered: 2025-10-03

Posts: 1

Random disconnects from Steam Datagram Relay servers

Hello,

For the past 2 years I get disconnected from Steam Datagram Relay (SDR) servers seemingly at random every 2 to 30 min.
It doesn't seem to me that this is a software issue on the part of Valve, as a friend of mine has a similar setup and it works fine for him.

- I don't get randomly disconnected from other servers.
- Using a vpn "fix" this issue.
- Changing ISP and home address did not resolve anything.
- Using either the motherboard's built-in network card or a dedicated network card doesn't change a thing either.

Any insight would be appreciated as I have no idea what else to look for here.

The log from CS 2 at the moment of disconnect.

[SteamNetSockets] [#1234567891 SDR server steamid:12345678912345678 vport 0 'server'] Lost primary session ams#22 (155.133.248.36:27036) received_nosession
[SteamNetSockets] [#1234567891 SDR server steamid:12345678912345678 vport 0 'server'] Selecting sto2#411 (155.133.252.88:27057) as primary.  (Ping = 27 = 26+1+0 (front+interior+remote).  Rank=1 Score=29)
[SteamNetSockets] [#1234567891 SDR server steamid:12345678912345678 vport 0 'server'] Requesting session from ams#22 (155.133.248.36:27036).  Ping = 25 = 5+20 (front+back).  Rank=2 Score=37
[SteamNetSockets] [#1234567891 SDR server steamid:12345678912345678 vport 0 'server'] Selecting ams#22 (155.133.248.36:27036) as backup #1 (Ping = 25 = 5+20+0 (front+interior+remote).  Rank=1 Score=25)
[SteamNetSockets] [#1234567891 SDR server steamid:12345678912345678 vport 0 'server'] Lost primary session sto2#411 (155.133.252.88:27057) received_nosession
[SteamNetSockets] [#1234567891 SDR server steamid:12345678912345678 vport 0 'server'] Selecting ams#22 (155.133.248.36:27036) as primary.  (Ping = 25 = 5+20+0 (front+interior+remote).  Rank=1 Score=25)
[SteamNetSockets] [#1234567891 SDR server steamid:12345678912345678 vport 0 'server'] Sequence number from ams#22 (155.133.248.36:27036) is duplicate or old, but end-to-end sequence number is OK?  Dropping.
[SteamNetSockets] [#1234567891 SDR server steamid:12345678912345678 vport 0 'server'] Sequence number from ams#22 (155.133.248.36:27036) is duplicate or old, but end-to-end sequence number is OK?  Dropping.
[SteamNetSockets] [#1234567891 SDR server steamid:12345678912345678 vport 0 'server'] Sequence number from ams#22 (155.133.248.36:27036) is duplicate or old, but end-to-end sequence number is OK?  Dropping.

Thanks !