Joined: 04 Dec 2007 Posts: 1252 Location: Murrysville, PA
Posted: Mon Jun 16, 2025 15:13 Post subject: r61745 & SmartDNS
I've seen something odd with r61745 and SmartDNS. The best way to describe it is SmartDNS occasionally acts like it is not adding entries to its resolver list and not expiring old entries. What I start seeing is frequently used web sites resolve and work. Sites that I have not been to in a few days or more return a 404. Restarting the smartdns service solves the issue.
Anyone have thoughts on this? I have not changes my DNSMasq and SmartDNS settings in many months so the behavior is new with the same settings (I am well aware that things could have changes behind the scenes.)
When I look in the syslog, I see nothing DNS related when this problem shows. I have tried getting SmartDNS to log but it still frustrating my efforts. _________________ Linksys MX8500 DD-WRT v3.0-r62966 std (12/06/25)
Linux 6.6.118-rt29 #4715 SMP Sat Dec 6 10:22:51 +07 2025 aarch64 Gateway, AP, DNSMasq, SmartDNS, NSS-ECM-SFE, QCA NSS, no STP
VAP on wlan1 for internet devices
IPv4 & IPv6 (Prefix Delegation)
Static Leases & DHCP
Cloudflare DoH & DoT, No QoS, No Forced DoT, 802.11k
2.4GHz: AP, AX Only, ACK Timing 300, WPA2 & WPA3 w/AES & GCMP
5GHz: AP, AX Only, ACK Timing 300, WPA2 & WPA3 w/AES & GCMP
Netgear AX1800 WiFi Mesh Extender
Xfinity 1.2Gbps/40Mbps
Joined: 16 Nov 2015 Posts: 7063 Location: UK, London, just across the river..
Posted: Mon Jun 16, 2025 19:27 Post subject:
Yep on my XR500 i noticed it was behaving odd..but only couse i was testing 'quic' it was behaving the same way as you said...
Once i rebooted and went back to 'tls' it was ok...and yes there ware few SmartDNS updates...recently..as well openssl..try different resolver.. _________________ Atheros
TP-Link WR1043NDv2 -DD-WRT 62606 Gateway/DoT,Forced DNS,Ad-Block,Firewall,x4VLAN,VPN
TP-Link WR1043NDv2 -Gargoyle OS 1.15.x AP,DNS,QoS,Quotas
Qualcomm-Atheros
Netgear XR500 -DD-WRT 63257 GTW/SmDNS/DoT,AD-Blk,Forced DNS,AP&Net Isolation,x2VLAN,Vanilla
Netgear R7800 --DD-WRT 62606 Gateway/DNSCryptv2,AD-Block,Forced DNS,AP&Net Isolation,x3VLAN,Firewall,Vanilla,VPN cli
Netgear R9000 --DD-WRT 62606 Gateway/DoT,AD-Block,AP Isolation,Firewall,Forced DNS,x2VLAN,Vanilla
Dynalink DL-WRX36-DDWRT 62606
Broadcom
Netgear R7000 --DD-WRT 63257 GTW/DNScrypt-proxy2/AD-Block,IPset Firewall,Forced DNS,x4VLAN,VPN cli
NOT USING 5Ghz ANYWHERE
------------------------------------------------------
Stubby DNS over TLS I DNSCrypt v2 by mac913
Joined: 04 Dec 2007 Posts: 1252 Location: Murrysville, PA
Posted: Mon Jun 16, 2025 20:12 Post subject:
Alozaros wrote:
Yep on my XR500 i noticed it was behaving odd..but only couse i was testing 'quic' it was behaving the same way as you said...
Once i rebooted and went back to 'tls' it was ok...and yes there ware few SmartDNS updates...recently..as well openssl..try different resolver..
Thanks. I can manage but thanks for confirming it is not just me. _________________ Linksys MX8500 DD-WRT v3.0-r62966 std (12/06/25)
Linux 6.6.118-rt29 #4715 SMP Sat Dec 6 10:22:51 +07 2025 aarch64 Gateway, AP, DNSMasq, SmartDNS, NSS-ECM-SFE, QCA NSS, no STP
VAP on wlan1 for internet devices
IPv4 & IPv6 (Prefix Delegation)
Static Leases & DHCP
Cloudflare DoH & DoT, No QoS, No Forced DoT, 802.11k
2.4GHz: AP, AX Only, ACK Timing 300, WPA2 & WPA3 w/AES & GCMP
5GHz: AP, AX Only, ACK Timing 300, WPA2 & WPA3 w/AES & GCMP
Netgear AX1800 WiFi Mesh Extender
Xfinity 1.2Gbps/40Mbps
I know that the configuration can be overridden, but that patch was before any of these. Perhaps you are confusing the smartdns binary on where to log things?
Right now, I have no settings for logging in my Additional Options. My /tmp/smartdns.conf starts like this:
