Could not initialise discovery: Unknown error { Address family not supported by protocol (os error 97) }

[tosiara]

Hi, any hints how to fix this error?

$ librespot -n "Librespot Speaker" -b 160 --zeroconf-interface 192.168.50.103 -v
[2026-03-13T11:28:49Z INFO  librespot] librespot 0.8.0 VERGEN_IDEMPOTENT_OUTPUT (Built on 2026-03-13, Build ID: PQlN8Ak9, Profile: release)
[2026-03-13T11:28:49Z TRACE librespot] Command line argument(s):
[2026-03-13T11:28:49Z TRACE librespot] 		n "Librespot Speaker"
[2026-03-13T11:28:49Z TRACE librespot] 		b "160"
[2026-03-13T11:28:49Z TRACE librespot] 		zeroconf-interface "192.168.50.103"
[2026-03-13T11:28:49Z TRACE librespot] 		v
[2026-03-13T11:28:49Z DEBUG librespot_core::session] new Session
[2026-03-13T11:28:49Z WARN  librespot_discovery::server] Discovery server failed to start: Address family not supported by protocol (os error 97)
[2026-03-13T11:28:49Z DEBUG librespot] System uptime > 1 min, not retrying to initialise discovery
[2026-03-13T11:28:49Z WARN  librespot] Could not initialise discovery: Unknown error { Address family not supported by protocol (os error 97) }
[2026-03-13T11:28:49Z ERROR librespot] Discovery is unavailable and no credentials provided. Authentication is not possible.

The system has no IPv6 (GRUB_CMDLINE_LINUX="ipv6.disable=1")

[nickwhaley]

I ran into this on an IPv6-only host too. Had IPv4 disabled on the system.