Thank you for o.m. link "sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2023-7f0a294b1a" which worked FINE on Sep,19. for glibc 2.37-5.fc38 --> glibc 2.37-6.fc38

systemd-resolve --status #looked like:

Global Protocols: LLMNR=resolve -mDNS -DNSOverTLS DNSSEC=no/unsupported resolv.conf mode: uplink Current DNS Server: [ IP local-dns1] DNS Servers: [ IP local-dns2] [ IP local-dns3] [ IP local-dns1] #IP local-dns2+3 are given by vpn-connection and Certificate DNS Domain: ~.

After update (and to glibc 2.37-7.fc38) it DOESN'T work again! and like jostra I'm facing: "in 2 parts overlayed as before: The certificate on the secure gateway is invalid. A VPN connection will not be established. Anyconnect was not able to establish a connection to the specified secure gateway. Please try connecting again. --> Cisco AC SMC Ver 4.10.07073"

systemd-resolve --status #looks as before Global Protocols: LLMNR=resolve -mDNS -DNSOverTLS DNSSEC=no/unsupported resolv.conf mode: uplink

Link 2 (enp0s31f6) Current Scopes: none Protocols: -DefaultRoute LLMNR=resolve -mDNS -DNSOverTLS DNSSEC=no/unsupported

Link 3 (wlp0s20f3) Current Scopes: DNS LLMNR/IPv4 Protocols: +DefaultRoute LLMNR=resolve -mDNS -DNSOverTLS DNSSEC=no/unsupported Current DNS Server: [IP local-dns1] DNS Servers: [ IP local-dns1]

Link 4 (virbr0) Current Scopes: none Protocols: -DefaultRoute LLMNR=resolve -mDNS -DNSOverTLS DNSSEC=no/unsupported

and

vpnagentd.service gives errors like:

acvpnagent[108857]: Function: determinePublicAddrCandidateFromDefRoute File: ../../vpn/AgentUtilities/HostConfigMgr.cpp Line: 3057 Invoked Function: CHos> acvpnagent[108857]: Function: updatePotentialPublicAddresses File: ../../vpn/AgentUtilities/HostConfigMgr.cpp Line: 3190 Invoked Function: CHostConfigMgr> acvpnagent[108857]: Function: GetSettings File: ../../vpn/Agent/ServicePluginMgr.cpp Line: 289 m_pIServicePlugin is NULL acvpnagent[108857]: Function: GetSettings File: ../../vpn/Agent/ServicePluginMgr.cpp Line: 289 m_pIServicePlugin is NULL acvpnagent[108857]: Function: GetSettings File: ../../vpn/Agent/ServicePluginMgr.cpp Line: 289 m_pIServicePlugin is NULL acvpnagent[108857]: Function: GetSettings File: ../../vpn/Agent/ServicePluginMgr.cpp Line: 289 m_pIServicePlugin is NULL acvpnagent[108857]: Function: GetSettings File: ../../vpn/Agent/ServicePluginMgr.cpp Line: 289 m_pIServicePlugin is NULL acvpnagent[108857]: Function: OnIpcMessageReceived File: ../../vpn/Common/IPC/IPCDepot.cpp Line: 1240 Invoked Function: CIpcTransport::OnSocketReadComplete Return Code: -33292279 (0xFE040009) Description: IPCTRANSPORT_ERROR_UNEXPECTED remote peer: gui

I kindly ask you to provide a final solution!

Thank you in advance!