I am also experimenting with IPv6 and frankly it is still a WIP and I am not talking about DDWRT, also some clients prefer IPv4 others IPv6 etc.
Dual stack can be problematic.
I have to agree with egc on this one. I have seen this from clients "sticking" to the IPv6 network and will not use the IPv4 network and the only way I can force that client connect to the IPv4 network was to disable the IPv6 on that network. So I fault the client for this issue.
But now I don't care what network it connects as long as it has Internet access. _________________ Home Network on Telus 1Gb PureFibre - 10GbE Copper Backbone
2x R7800 - Gateway & WiFi & 3xWireGuard - DDWRT r53562 Std k4.9
Off Site 1
R7000 - Gateway & WiFi & WireGuard - DDWRT r54517 Std
E3000 - Station Bridge - DDWRT r49626 Mega K4.4
Off Site 2
R7000 - Gateway & WiFi - DDWRT r54517 Std
E2000 - Wired ISP IPTV PVR Blocker - DDWRT r35531
settings for SmartDNS
enable resolver - enable
dualstack IP selection - enable (if you want to race ivp6 & ipv4 answer) otherwise live it to disable
prefetch domain - disable
serve expired - enable
use additional servers only - enable
on DNSmasq section
encrypt dns - disable
no dns rebind - enable
Validate DNS replays (DNSSEC) - disable
cache DNSSEC data - disable
query dns in strict order - disable
max cache - 0
I tried those settings. Cache at 0 made startup very slow and the R9000 rebooted three times before it was stable. I set that back to 200. Still, no IPv4 DNS servers, even with the four lines that I copied and pasted into the Additional Options box. Using DNSSEC seems to slow down performance markedly. _________________ Netgear R9000
DD-WRT v3.0-r55819 std (04/17/24)
Linux 4.9.337 #722 SMP Wed Apr 17 04:16:49 +07 2024 armv7l
Gateway, AP, DNSMasq, Clock 2000MHz
VAP on wlan1 for internet devices
IPv4 & IPv6 (Prefix Delegation)
Static Leases & DHCP
CloudFlare, no SFE, SmartDNS, no QoS
2.4GHz: Vanilla, Airtime Fairness, NG-Mixed, ACK Timing 3150, WPA2 w/AES & WPA3
5GHz: Vanilla, Airtime Fairness, AC/N Mixed, ACK Timing 3150, WPA2 w/AES & WPA3
2 Netgear AX1800 WiFi Mesh Extenders
Xfinity 1.2Gbps/35Mbps
Joined: 25 Dec 2020 Posts: 90 Location: Toronto - Canada
Posted: Sun Jan 08, 2023 20:31 Post subject:
mac913 wrote:
egc wrote:
I am also experimenting with IPv6 and frankly it is still a WIP and I am not talking about DDWRT, also some clients prefer IPv4 others IPv6 etc.
Dual stack can be problematic.
I have to agree with egc on this one. I have seen this from clients "sticking" to the IPv6 network and will not use the IPv4 network and the only way I can force that client connect to the IPv4 network was to disable the IPv6 on that network. So I fault the client for this issue.
But now I don't care what network it connects as long as it has Internet access.
I also read that Windows clients, plus even Linux does the same. But there seems to be a way to force IPv4 on all. No expert on this, but I dealt with similar issues on our Mobile users systems in the field, where I had to disable IPv6 at the client level for routing issues.
Here is an example of global setting for Linux, but I am not sure if it applies to something that can be controlled within DD-WRT ever?
The precedence table can be changed to prefer IPv4 over IPv6 by raising the precedence for the prefix ::ffff:0.0. 0.0/96 to a value higher than that for ::/0. Such system-wide configuration is usually done on Linux hosts by editing /etc/gai
logs / proof please. there is no known crash on these devices with site survey.
My mistake; more accurate: Over 5g WDS from a wndr3700v4 client to a DIR-862L AP, running a 5g Channel Survey on the DIR-862L drops the WDS connection.
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