Joined: 16 Jun 2022 Posts: 16 Location: Dallas, TX
Posted: Tue Aug 09, 2022 13:04 Post subject:
Firmware: DD-WRT v3.0-r49626 std (08/03/22)
Router/Version: ASUS RT-AC5300
Kernel: Linux 4.4.302-st20 #6850 SMP Wed Aug 3 03:56:41 +07 2022 armv7l
Previous: DD-WRT v3.0-r49492 std (07/14/22)
Mode/Status: Wired and Wireless (1x 2.4 GHz, 2x 5 GHz) as Router (with DHCP), Switch and AP. DNS is offloaded to PiHole.
Uptime: 5 days, 20:42
Reset: Yes
Temperatures: CPU 52.5 °C / WL0 42.5 °C / WL1 43.5 °C / WL2 48.0 °C
Issues/Errors: Short version ... ultimately determined unit was overheating, nothing related to DD-WRT.
Long version...
I was experiencing an increase in random issues, mainly drops/inability to connect to the WL0 or WL1 antenna. A few times the router stopped responding completely and rebooted itself. I thought perhaps an NVRAM reset would help as a first step, so I proceeded to upgrade with the reset selected, then reconfigured everything by hand.
Unfortunately the issues continued. I came to suspect the unit was overheating based on the temperatures being reported by DD-WRT, which at the time 5 days ago were the following:
CPU 69.7 °C / WL0 50.0 °C / WL1 51.0 °C / WL2 54.5 °C
Doing some searches on the web, I found posts on various forums (including one on DD-WRT) about users experiencing similar random stability issues they ultimately attributed to the unit being too hot for RT-AC5300.
I then proceeded to increase air circulation around the router (a fan) and also elevated the router on a wire-rack to increase its intake air vs. sitting on a wood surface. Been completely stable for the past 5 days now, current temps:
CPU 52.5 °C / WL0 42.5 °C / WL1 43.5 °C / WL2 48.0 °C
In short, the problems were not related to DD-WRT, just my unit's ability to keep itself cool.
Joined: 04 Mar 2021 Posts: 65 Location: Manchester
Posted: Tue Aug 09, 2022 15:13 Post subject: Works with issues
Works fine but when I activate the firewall, there is no internet connection and the router cannot be accessed.
I also found powering off the router a few times resets it back to default settings and I had to configure it from scratch. _________________ Netgear R7000
DD-WRT DD-WRT v3.0-r50595 std (10/23/22)
Manchester
Enable dnsmasq- Yes
Encrypt DNS- NO
DNSCrypt Resolver- No Using Smart DNS
Cache DNSSEC Data- Yes
Validate DNS Replies (DNSSEC)- NO
Check Unsigned DNS Replies- NO
No DNS Rebind- Enable
Query DNS in Strict Order- Enable
Add Requestor MAC to DNS Query- Disable
RFC4039 Rapid Commit Support- Enable
Maximum Cached Entries- 1500
Joined: 18 Mar 2014 Posts: 12917 Location: Netherlands
Posted: Tue Aug 09, 2022 15:45 Post subject: Re: Works with issues
manchesterblack wrote:
Works fine but when I activate the firewall, there is no internet connection and the router cannot be accessed.
I also found powering off the router a few times resets it back to default settings and I had to configure it from scratch.
Powering on and off without letting the router properly start 5 times will reset the router.
That is a setting on the Administration page: "BootFail handling"
Router/Version: Asus RT-N66U
File: dd-wrt.v24-49599_NEWD-2_K3.x-big-RT-N66U.trx
Firmware: DD-WRT v3.0-r49626 big (08/03/22) (prev. DD-WRT v3.0-r49599 big (07/30/22))
Kernel: Linux 4.4.302-st20 #17708 Wed Aug 3 05:13:48 +07 2022 mips
Mode: Gateway, SFE disabled, Wifi disabled, WAN disabled, Wireguard Endpoint for external VPS, connected via LAN to WRT1900ACS v2, Keep Alive reboot 6:05 in the morning
Reset: No
Status: Installed at release, ok.
Joined: 08 May 2018 Posts: 14247 Location: Texas, USA
Posted: Thu Aug 11, 2022 14:42 Post subject:
@egc, @lanchon: I would have to dig out my K26 E4200 to see what build is on it. Some devices haven't really been touched in a while, but I'm pretty sure that it's a January 2022 build. But I haven't reset that device in a while, either. There are no caveats in the device wiki regarding LAN ports, so it may be a matter of wrong nvram / swconfig mapping (?). _________________ "Life is but a fleeting moment, a vapor that vanishes quickly; All is vanity"
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Linux User #377467 counter.li.org / linuxcounter.net
Joined: 18 Mar 2014 Posts: 12917 Location: Netherlands
Posted: Thu Aug 11, 2022 14:51 Post subject:
kernel-panic69 wrote:
@egc, @lanchon: I would have to dig out my K26 E4200 to see what build is on it. Some devices haven't really been touched in a while, but I'm pretty sure that it's a January 2022 build. But I haven't reset that device in a while, either. There are no caveats in the device wiki regarding LAN ports, so it may be a matter of wrong nvram / swconfig mapping (?).
That is what I first thought as there is something in the wiki about that but if I set a static IP on my PC all is fine and dandy
It is just that DNSMasq is not running (and thus no DHCP)
For me Build 47665 is working and build 47695 is not
Joined: 08 May 2018 Posts: 14247 Location: Texas, USA
Posted: Thu Aug 11, 2022 15:27 Post subject:
In the past, there have been "hands in the cookie jar", so if it was dnsmasq-specific breaking it, then it would be broken across all devices. Check nvram variables and dnsmasq configs. Listen interface should be br0, and check nvram show | grep dhcp , nvram show | grep dnsmasq , nvram show | grep lan_ output. _________________ "Life is but a fleeting moment, a vapor that vanishes quickly; All is vanity"
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Linux User #377467 counter.li.org / linuxcounter.net
Posted: Thu Aug 11, 2022 16:00 Post subject: R8500 49626
Router Name Router Model Netgear R8500
Firmware Version DD-WRT v3.0-r49626 std (08/03/22)
Kernel VersionLinux 4.4.302-st20 #6851 SMP Wed Aug 3 04:03:45 +07 2022 armv7l
MAC Address
Hostname
WAN Domain Name
LAN Domain Name
Current TimeTime
Uptime 15:38
CPU ModelBroadcom BCM4709
CPU Cores2
CPU Features
EDSP FASTMULT HALF TLS
CPU Clock1400 MHz
Load Average
0%0.00, 0.01, 0.00
TemperaturesCPU 73.0 °C / WL0 55.3 °C / WL1 53.5 °C / WL2 52.5 °C
As stated in two forum threads the issues encountered have been loss of WIFI which was recovered by flashing in a very old dd wrt firmware version from year 2016 (ver. 30xxx) then flashing in the newest firmware 49626 and this caused the wifi to reappear.
second issue is that not all 6 physical ports are behaving properly. the first 4 act normal but ports 5 and 6 cannot have their own ip address and dhcp server. ports 5 and 6 will follow port 4 configuration. (ie. so whatever port 4 is setup to do, 5 and 6 appear to copy this)
other than that everything seems to work fine. i have various wifi clients on and off the router in the past 12 hours without loss or drop out.
the wifi speed is not ideal. more investigation into wifi speeds is necessary.
internet speeds over wired conections are fine and able to reach max available from cable modem into the facilty.
Joined: 18 Mar 2014 Posts: 12917 Location: Netherlands
Posted: Thu Aug 11, 2022 16:35 Post subject:
kernel-panic69 wrote:
In the past, there have been "hands in the cookie jar", so if it was dnsmasq-specific breaking it, then it would be broken across all devices. Check nvram variables and dnsmasq configs. Listen interface should be br0, and check nvram show | grep dhcp , nvram show | grep dnsmasq , nvram show | grep lan_ output.
Two users with K2.6 report it is broken so it looks like it is broken for K2.6.
In the build thread in which I reported I already showed my dnsmasq.conf which looks OK
dnsmasq is present although a lot smaller than on my other routers, probably by design, further problem is that dnsmasq does not give any output also probably by design, the router reports it is not running so is syslog.
DNSMasq is running in build 47665 but not in build 47965, between those builds there has been a DNSMasq update. So that is suspicious
So I presume the one no longer being installed is for all non-micro builds across the board.
It looks to check use of jffs related to dhcp and set the proper nvram variables, and I couldn't track down any related code elsewhere yet. That is the only thing I can find at the moment and have not had the chance to check my K2.6 E4200 yet - but I have a feeling it's on mini builds only for K2.6 (and possibly other 4MB flash devices?) or related to doing a reset to defaults (caveat emptor?). I would check the associated nvram variables to see if that is what got b0rked as well. I could be totally wrong, it's been a long weary day. _________________ "Life is but a fleeting moment, a vapor that vanishes quickly; All is vanity"
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Linux User #377467 counter.li.org / linuxcounter.net
root@Linksys WRT160N v3:/tmp# cat /etc/rfc6761.conf
# RFC6761 included configuration file for dnsmasq
#
# includes a list of domains that should not be forwarded to Internet name servers
# to reduce burden on them, asking questions that they won't know the answer to.