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Client connecton stalled after CAP ACK #1028

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opened 2026-10-05 04:59:13 +02:00 by adam · 3 comments
adam commented 2026-10-05 04:59:13 +02:00
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Hey all,

we are using znc 1.8.2 to connect a client with small bandwith and high latency to an irc channel. the client connects to the server but stopps after capability handling:

Connecting to 10.250.0.1:5050 (10.250.0.1:5050)
Connected. Now logging in.
Capabilities supported: batch cap-notify echo-message multi-prefix server-time userhost-in-names znc.in/batch znc.in/self-message znc.in/server-time-iso
Capabilities requested: cap-notify multi-prefix server-time userhost-in-names znc.in/server-time-iso
Capabilities acknowledged: cap-notify multi-prefix server-time userhost-in-names znc.in/server-time-iso
Disconnected ()

connections from a stable and fast LAN/WLAN works fine and we have no idea what happens

Thanks
Georg

Hey all, we are using znc 1.8.2 to connect a client with small bandwith and high latency to an irc channel. the client connects to the server but stopps after capability handling: Connecting to 10.250.0.1:5050 (10.250.0.1:5050) Connected. Now logging in. Capabilities supported: batch cap-notify echo-message multi-prefix server-time userhost-in-names znc.in/batch znc.in/self-message znc.in/server-time-iso Capabilities requested: cap-notify multi-prefix server-time userhost-in-names znc.in/server-time-iso Capabilities acknowledged: cap-notify multi-prefix server-time userhost-in-names znc.in/server-time-iso Disconnected () connections from a stable and fast LAN/WLAN works fine and we have no idea what happens Thanks Georg <!-- github-sync-id:1886500774 -->
adam closed this issue 2026-10-05 04:59:13 +02:00
adam commented 2026-10-05 04:59:14 +02:00
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show znc -D

show `znc -D` <!-- github-comment-id:1710843975 -->
adam commented 2026-10-05 04:59:15 +02:00
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Next flight is on saturday, 18:00 UTC, i will record the debug-log, thanks

Next flight is on saturday, 18:00 UTC, i will record the debug-log, thanks <!-- github-comment-id:1711126133 -->
adam commented 2026-10-05 04:59:15 +02:00
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It seems to be an MTU Problem on the satcom link. Not an ZNC Issue
closed

It seems to be an MTU Problem on the satcom link. Not an ZNC Issue closed <!-- github-comment-id:1712562961 -->
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Reference: adam/znc#1028