On 06/01/2021 00:10, Jerome Lille wrote:
I've just updated a desktop from Fedora 32 to 33 and after that the
logs are flooded with the following message
systemd-resolved[]: Using degraded feature set TCP instead of UDP for
DNS server 127.0.0.1.
systemd-resolved[]: Using degraded feature set UDP instead of TCP for
DNS server 127.0.0.1.
This machine uses a VPN service that is always on. The file
/etc/resolver.conf has just one line with the nameserver from the VPN
provider. There's no problem in name resolution. Just the constant
flooding of the logs.
Late to the "party".
I'm surprised that nobody asked "What kind of VPN are you using, and how did you
configure it?".
I'm running F33 and an OpenVPN connection using the now standard
systemd-resolved. The OpenVPN
connection was configured and is managed by the normal NetworkManager interface.
When the VPN is up the contents of /etc/resolv.conf is not changed. It still
has the systemd-resolved
info.
nameserver 127.0.0.53
options edns0 trust-ad
The only thing "new" is in the output of resolvectl. Which now has this added
to it.
Link 3 (tun0)
Current Scopes: DNS LLMNR/IPv4 LLMNR/IPv6
Protocols: +DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported
Current DNS Server: 25.0.0.1
DNS Servers: 25.0.0.1
DNS Domain: ~.
So, to me, it seems odd that your /etc/resolv.conf should has been overwritten.
---
The key to getting good answers is to ask good questions.
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